Unplasticized Polyvinyl Chloride (PVC-U) Threaded Column Pipes For Borewells/Tubewells Specification
Unplasticized Polyvinyl Chloride (PVC-U) Threaded Column Pipes For Borewells/Tubewells Specification
Indore(maveshaheen959@gmail.com) 49.43.0.4.
Indian Standard
ICS 23.040.20
 BIS 2025
FOREWORD
This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Plastic Piping
System Sectional Committee had been approved by the Civil Engineering Division Council.
This standard has been formulated to cover requirements and test methods for unplasticized polyvinyl
chloride (PVC-U) threaded column pipes for use with jet and submersible pumps in borewells/tubewells.
It is the responsibility of the purchaser or the supplier to make the appropriate selection of pipes taking into
account their particular requirements and any relevant national guidelines or regulations. Relevant guidelines for
installation practices should be followed.
The composition of the Committee responsible for the formulation of this standard is given in Annex D.
For the purpose of deciding whether a particular requirement of the standard is complied with, the final value
observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with
IS 2 : 2022 ‘Rules for rounding off numerical values (second revision)’. The number of significant places
retained in the rounded off value should be the same as that of the specified value in this standard.
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                                                  Indian Standard
           UNPLASTICIZED POLYVINYL CHLORIDE (PVC-U)
            THREADED COLUMN PIPES FOR BOREWELLS/
                 TUBEWELLS — SPECIFICATION
1 SCOPE PFA = fA x fT x PN
The standards listed in Annex A contain provisions               3.5 Hydrostatic Stress (σ) — The stress induced in
which, through reference in this standard, constitute            the wall of a pipe when a pressure is applied using
provisions of this standard. At the time of                      water as a medium. The hydrostatic stress is related
publication, the editions indicated were valid. All              to the applied pressure, P, the wall thickness of thin
standards are subject to revision, and parties to                portion at any point, eb, and the mean outside
agreements based on this standard are encouraged to              diameter, dem, of a pipe and calculated using the
investigate the possibility of applying the most                 following approximation equation:
recent edition of these standards.
                                                                                      𝑃(𝑑em − 𝑒b)
3 TERMINOLOGY                                                                    𝜎=
                                                                                          2𝑒b
For the purpose of this standard, the following                  where σ and P are in same units.
definitions shall apply.
                                                                 3.6 Maximum Mean Outer Diameter (dem, Max) —
3.1 Allowable Operating Pressure (PFA) — The
                                                                 The maximum value for the mean outside diameter as
maximum hydrostatic pressure excluding surge
                                                                 specified for a given nominal size.
which is allowed in continuous use with water
within the temperature range concerned. It is                    3.7 Minimum Mean Outer Diameter (dem, Min) —
calculated using the following equation:                         The minimum value for the mean outside diameter
                                                                 as specified for a given nominal size.
                   PFA = fT x PN
                                                                 3.8 Mean Outer Diameter (dem) — The quotient of
where
                                                                 the outer circumference of a pipe and 3.142 (π) in
   fT = derating factor depending on water                       any cross-section, rounded off to the next higher
         temperature; and                                        0.1 mm.
    PN = working pressure.
    NOTE — In cases where a further derating (or uprating)       3.9 Mean Wall Thickness (eme and emb) — The
    factor depending on the application is required,             arithmetical mean of at least four measurements
                                                             1
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regularly spaced around the circumference and in                      3.19 Working Pressure (PN) — The numerical
the same cross-section of the pipe, including the                     designation of a pipe related to the mechanical
measured minimum and the measured maximum                             characteristics of that pipe used for reference
values of the wall thickness in that cross-section,                   purposes. For plastic piping systems, it corresponds
rounded off to the next higher 0.1 mm.                                to the allowable operating pressure, in MPa,
     NOTE — emb and eme are mean wall thickness of barrel
                                                                      conveying water at 27 °C.
     (thin portion) and end side (thick portion), respectively.
                                                                      4 COMPOSITION
3.10 Nominal Outer Diameter (do) — The
specified outside diameter, in mm, assigned to a                      4.1 The material from which the pipe is produced
nominal size.                                                         shall consist substantially of unplasticized polyvinyl
                                                                      chloride to which may be added only those additives
3.11 Nominal Size (DN) — The numerical designation                    that are needed to facilitate production of sound and
for the size of the pipe other than a pipe designated by              durable pipe of good surface finish and mechanical
thread size, which is a convenient round number                       strength under conditions of use. None of these
approximately equal to the manufactured dimension, in                 additives shall be used, separately or together, in
mm.                                                                   quantities sufficient to constitute a toxic,
                                                                      organoleptic or microbial growth hazard or to
    NOTE — enb and ene are nominal wall thickness of barrel
    (thin portion) and end side (thick portion), respectively.
                                                                      materially impair the fabrication or welding
                                                                      properties of the pipe, or to impair the chemical,
3.12 Nominal Wall Thickness (ene and enb) — A                         physical or mechanical properties (in particular
numerical designation of the wall thickness of a                      long-term mechanical strength and impact strength)
component which is a convenient round number,                         as defined in this standard. The additives to be
approximately equal to the manufacturing                              used shall be selected from IS 10148 and shall be
dimensions, in mm.                                                    uniformly dispersed.
3.13 Outer Diameter at Any Point (de) — The                           4.1.1 The monomer content (VCM content) in the
value of the measurement of the outer diameter of a                   resin shall be within the limits specified in 4.4.1 of
pipe through its cross-section at any point of the                    IS 10151, when tested as per Annex A of IS 10151.
pipe, rounded off to next higher 0.1 mm.
                                                                      4.1.2 The composition shall be based on PVC resin
3.14 Out-of-Roundness (Ovality) — The difference                      having a K-value of 64 or greater, when tested in
between the measured maximum and the measured                         accordance with IS 4669.
minimum outside diameter in the same cross-section                    4.1.3 A test report or certificate of conformity may
of the pipe.                                                          be obtained from the manufacturer for the VCM
                                                                      content (see 4.1.1) and K-value (see 4.1.2) of the
3.15 Own Rework Material — Material prepared                          resin being used, unless the same is tested in an
from rejected unused pipes, including trimmings                       independent laboratory. The frequency of this test
from the production of pipes, that will be                            report or certificate of conformity shall be once in
reprocessed in a manufacturer’s plant by a process                    every three months.
such as extrusion and for which the complete
formulation is known.                                                 4.2 The addition of not more than 5 percent of the
                                                                      manufacturer’s own rework material conforming to
3.16 Tolerance — The permitted variation of the                       this standard is permissible. No other rework
specified value of a quantity, expressed as the                       material shall be used.
difference between the permitted maximum and the
                                                                      5 COLOUR
permitted minimum value.
                                                                      The pipe and coupler shall be of regular ivory white
3.17 Virgin Material — Material in such form as                       colour throughout. Slight colour deviation is
granules or powder that has not been subjected to                     permissible.
use or processing other than that required for its
manufacture and to which no reprocessable or                          6 CLASSIFICATION
recyclable material(s) have been added.                               The column pipes shall be classified by pressure
                                                                      ratings (working pressures) at 27 °C as per Table 1.
3.18 Wall Thickness at any Point (ee and eb) —                        The maximum permissible hydraulic head of
The value of the measurement of the wall thickness                    different classes of column pipes shall be as given
at any point around the circumference of the pipe,                    in Table 1.
rounded off to the next higher 0.1 mm.
                                                                      The maximum safe working stress considered is
    NOTE — eb and ee are wall thickness at any point of barrel
    (thin portion) and end side (thick portion), respectively.
                                                                      14 MPa at 27 °C.
                                                                  2
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                                    Table 1 Classification of Column Pipes
                                                  (Clause 6)
L1 L2 L3
                                                         3
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                                                                                  c
                                                                                                     b
                                               e                                                     a
                                FRONT VIEW                                                     CROSS SECTION
                                                                                                   VIEW
                                                    GROOVE               GROOVE
                            FREE END                                              PERMANENT END
                                                                                                         DIAMETER
            DIAMETER
                                                                                                                    DIAMETER
 DIAMETER
MINOR
                                                                                                                    MAJOR
 MAJOR
MINOR
                       If                    PITCH                                                  Ip
                               THREADING                                              THREADING
                               LENGTH, L f                                            LENGTH, L p
                                                                  4
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8 THREADING OF COLUMN PIPES AND                                The manufacture should declare regarding the use
COUPLERS                                                       of adhesive/solvent if any. Such material, when
                                                               used, shall not have any detrimental effect on the
8.1 Column Pipes                                               quality of water for its intended use.
                                                          5
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           Table 3 Wall Thickness of Different Classes of Unthreaded Column Pipes with Thick-Thin Portion
                                                    (Clause 7.1)
Sl No.   Nominal       Class of     Both End (Thick)         Barrel (Thin)       Length of Thick       Induced
         Size, DN       Pipe            Portion                Portion            Portion at Both       Stress,
                                                                                 Side (L1 and L3),       Min
                                                                                        Min
                                      Min        Max         Min        Max
            mm          mm            mm         mm          mm         mm             mm                   MPa
  (1)       (2)          (3)           (4)        (5)        (6)        (7)             (8)                 (9)
                       Class 1         2.9       3.30        1.50        1.80          150                  12
                       Class 2         3.3       3.80        1.70        2.00          150                  12
   i)       25
                       Class 3         3.8       4.40        1.90        2.20          150                  13
                       Class 4         4.6       5.30        2.40        2.80          150                  13
                       Class 1         3.3       3.80        1.50        1.80          180                  14
                       Class 2         3.7       4.30        1.80        2.10          180                  14
                       Class 3         4.3       5.00        2.20        2.50          180                  14
  ii)       32         Class 4        5.40       6.20        2.80        3.20          180                  14
                       Class 5        6.50       7.50        3.50        4.00          180                  14
                       Class 6        8.30       9.60        4.70        5.40          180                  14
                       Class 7        8.50       9.80        5.80        6.70          200                  14
                       Class 1        3.50       4.00        1.70        2.00          180                  14
                       Class 2        4.10       4.70        2.10        2.40          180                  14
                       Class 3        4.90       5.70        2.50        2.90          180                  14
  iii)      40
                       Class 4        5.90       6.80        3.20        3.70          180                  14
                       Class 5        7.20       8.30        4.00        4.60          180                  14
                       Class 6        9.30      10.70        5.40        6.20          180                  14
                       Class 7        9.60      11.00        6.50        7.50          200                  14
                       Class 1        4.20       4.90        2.10        2.40          180                  14
                       Class 2        4.90       5.60        2.60        3.00          180                  14
                       Class 3        5.90       6.80        3.10        3.60          180                  14
  iv)       50         Class 4        7.20       8.30        4.00        4.60          200                  14
                       Class 5        8.80      10.10        5.00        5.80          200                  14
                       Class 6       11.10      12.80        6.70        7.70          200                  14
                       Class 7       11.30      13.00        8.20        9.20          200                  14
                       Class 1        5.00       5.80        2.60        3.00          180                  14
                       Class 2        6.00       6.90        3.30        3.80          180                  14
                       Class 3        7.00       8.10        3.90        4.50          180                  14
  v)        65
                       Class 4        8.60       9.90        5.00        5.80          200                  14
                       Class 5       10.40      12.00        6.20        7.10          200                  14
                       Class 6       13.50      15.50        8.40        9.70          200                  14
                       Class 1        5.60       6.40        3.10        3.60          180                  14
                       Class 2        6.50       7.50        3.80        4.40          180                  14
                       Class 3        7.90       9.10        4.50        5.20          180                  14
  vi)       80
                       Class 4        9.70      11.20        5.90        6.80          200                  14
                       Class 5       11.60      13.30        7.30        8.40          200                  14
                       Class 6       15.20      17.50        9.80       11.30          200                  14
                       Class 1        6.80       7.80        3.90        4.50          180                  14
                       Class 2        8.20       9.40        4.90        5.70          180                  14
                       Class 3        9.60      11.00        5.80        6.70          180                  14
  vii)      100
                       Class 4       11.90      13.70        7.60        8.60          200                  14
                       Class 5       14.30      16.50        9.30       10.70          200                  14
                       Class 6       19.00      21.90       12.60       14.50          200                  14
                       Class 1        8.20       9.40        4.90        5.60          230                  14
                       Class 2        9.70      11.20        6.00        6.90          230                  14
 viii)      125        Class 3       11.50      13.20        7.20        8.30          230                  14
                       Class 4       14.40      16.60        9.40       10.80          250                  14
                       Class 5       17.30      19.90       11.50       13.20          250                  14
                       Class 6       23.00      26.50       15.60       18.00          250                  14
                                                        6
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Table 3 (Concluded)
Sl No.         Nominal           Class of           Both End (Thick)                   Barrel (Thin)                Length of Thick         Induced
               Size, DN           Pipe                  Portion                          Portion                     Portion at Both         Stress,
                                                                                                                    Side (L1 and L3),         Min
                                                                                                                           Min
                                                     Min              Max              Min           Max
                 mm                mm                mm               mm               mm            mm                  mm                   MPa
 (1)             (2)               (3)                (4)              (5)             (6)           (7)                  (8)                 (9)
                                 Class 1             9.30             10.70             5.70          6.60               230                   14
                                 Class 2            11.20             12.90             7.10          8.20               230                   14
                                 Class 3            13.10             15.10             8.40          9.70               230                   14
 ix)             150
                                 Class 4            16.60             19.10            11.00         12.70               250                   14
                                 Class 5            20.10             23.10            13.60         15.70               250                   14
                                 Class 6            26.90             31.00            18.40         21.20               250                   14
         NOTE — Length of thick portion (L1 and L3) at both ends of the pipe is required for thread operation for joining the pipes with each
         other with couplers.
                Sl No.         Nominal        Mean Outer Diameter of Column Pipe                       Internal Diameter of Column
                               Size, DN                Coupler, a, Min                                     Pipe Coupler, b, Max
                                                                              7
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             Table 6 Thread Dimensions for Both Female Ends of Column Pipe Coupler
                                       (Clauses 7.1 and 8.3)
                                  All dimensions in millimetres.
 Sl No.   Nominal Size,         Female End               Free End Side        Permanent End   Pitch
              DN              (Tolerance +𝟎 .𝟑
                                         −𝟎.𝟎 )             Length,            Side Length,
                                                              Min                  Min
                            Major          Minor           Lf            lf    Lp      lp
                           Diameter       Diameter
  (1)             (2)         (3)             (4)         (5)        (6)      (7)      (8)     (9)
IS 18166 : 2025
(Clause 7.1)
Sl     Nominal    D +𝟎.𝟐
                    −𝟎.𝟎   D1 +𝟎.𝟎
                              −𝟎.𝟐   D2   +𝟎.𝟎
                                          −𝟎.𝟐     Major       Minor        A +𝟐.𝟎
                                                                              −𝟎.𝟎       B +𝟐.𝟎
                                                                                           −𝟎.𝟎        C +𝟐.𝟎
                                                                                                         −𝟎.𝟎   E +𝟎.𝟎
                                                                                                                  −𝟎.𝟐   F +𝟎.𝟎
                                                                                                                           −𝟎.𝟐   G +𝟎.𝟏
                                                                                                                                    −𝟎.𝟎   H +𝟎.𝟎
                                                                                                                                             −𝟎.𝟐   Thread   Pitch
No.    Size, DN                                    d +𝟎.𝟎
                                                     −𝟎.𝟐      d +𝟎.𝟐
                                                                 −𝟎.𝟎                                                                               Depth
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16)
ii) 32 43.4 39.3 39.8 41.5 39.9 8 51 60 12 48 2.5 3.0 1.0 3.0
iii) 40 49.4 45.3 45.8 47.5 45.9 8 51 60 12 48 2.5 3.0 1.0 3.0
                                                                                     9
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9.4 Tensile Strength and Elongation at Break                  9.6 Izod Impact Strength Test
When tested by the method described in IS 12235               When tested in accordance with the method
(Part 13), the average tensile strength of three test         described in Annex B, the notch izod-impact
specimens cut longitudinally from barrel (thin)               strength shall not be less than 60 J/m.
portion of the same pipe at maximum load shall
not be less than 45 MPa and the elongation at break           9.7 Resistance to Dichloromethane Test
shall not be less than 30 percent.
                                                              When tested in accordance with the method
The specimen for the test shall be prepared from a            described in IS 12235 (Part 11), there shall be no
section of the pipe. The specimens shall be cut or            attack observed on any part of the surface of test
machined from lengths of pipe in the longitudinal             piece taken from pipe and coupler.
direction, that is, along the pipe axis.
                                                              9.8 Density
9.5 Ultimate Breaking Load
                                                              When tested by the method described in
Ultimate breaking load shall be checked at both               IS 12235 (Part 14), the density of the material of
sides of the threaded assembly of column socketed             the pipe and coupler shall be between 1.40 g/cm3
pipe or cut piece of thick end portion of pipe with           and 1.44 g/cm3.
coupler. Threaded assembly shall be fitted in
suitable end fixtures. End fixtures shall then be             9.9 Vicat Softening Temperature
mounted on the universal testing machine (UTM) of
adequate capacity. The test temperature and test              The Vicat softening temperature shall not be less
speed shall be (27 ± 2) °C and 10 mm/min,                     than 80 °C when tested by the method described in
respectively. The jaws of the UTM shall be pulled             IS 12235 (Part 2) for both pipe and coupler. The
until the assembly breaks. The pick load shall be             test may be done on a test piece cut from a sample
noted. Minimum pick load shall be as per Table 9              of the pipe used for some other test (such as density
for all size and class of pipes. A typical ultimate           or resistance to external blows) as long as that
breaking load assembly is shown in Fig. 3 for                 sample has not been subjected to conditions that
reference.                                                    could influence the Vicat softening temperature.
        Table 8 Total Mass of Striker and Height of Free Fall for Resistance to External Blows Test
                                               (Clause 9.2)
          Sl No.        Nominal          Total Mass of        Height of Free       Number of Equidistant
                        Size, DN            Striker               Fall               Lines to be Drawn
                                               kg                  mm
            (1)             (2)                (3)                 (4)                        (5)
             i)             25           0.25 % ± 0.5 %         1 000 ± 10                     1
                                                         10
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                                                                          END FIXTURE
                                    END FIXTURE
                                                                              THREADED
THREADED                             THREADED                                 ASSEMBLY
  PIPES                              COUPLER
                                    END FIXTURE
                                                                          END FIXTURE
FIG. 3A PIPE WITH COUPLER FIG. 3B BELL AND SPIGOT ENDED PIPE
                                            Class 1                    588
                  i)          25            Class 2                    717
                                            Class 3                    802
                                            Class 4                   1 008
                                            Class 1                    859
                                            Class 2                   1 023
                                            Class 3                   1 238
                  ii)         32
                                            Class 4                   1 552
                                            Class 5                   1 906
                                            Class 6                   2 479
                                            Class 7                   2 669
                                               11
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                                           Table 9 (Concluded)
                                                  12
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10.1.6 The lot, having satisfied the requirements              of the izod impact strength test, the type test of the
under 10.1.5 shall be tested for the requirements in           pipe under consideration shall be considered to be
9.2 and 9.3. For this purpose, a sub-sample from               eligible for approval, which shall be normally valid
those tested under 10.1.5 shall be drawn as given in           for a period of one year.
col (10) of Table 11 for the first/second sample
size. The lot shall be deemed to have met the                  10.2.1.4 In case any of the samples fails in this test,
requirements given in the standard, if the number of           the testing authority, at its discretion, may call for
defectives found in the first sample is less than or           fresh samples not exceeding the original number,
equal to the corresponding acceptance number                   and subject them to the test for izod impact strength
given in col (12) of Table 11. The lot shall be                test. If, in the repeat test, no single failure occurs,
deemed not to have met these requirements, if the              the type of pipe under consideration shall be
number of defectives found in the first sample is              considered eligible for type approval. If any of the
greater than or equal to the corresponding rejection           samples fails in the repeat test, the type of pipe
number given in col (13) of Table 11. If, however,             shall not be approved. The manufacturer or the
the number of defectives found in the first sample             supplier may be asked to improve the design and
lies between the corresponding acceptance and                  resubmit the product for type approval.
rejection numbers given in col (12) and (13) of
Table 11, a second sample of the size given in                 10.2.1.5 At the end of the validity period (normally
col (10) of Table 11 shall be taken and tested for             one year) or earlier, if necessary, the testing
the requirement, the lot shall be deemed to have               authority may call for fresh samples for izod impact
satisfied the requirements, if the number of                   strength test for the purpose of type approval.
defectives found in the cumulative sample is less
than or equal to the corresponding acceptance
number given in col (12) of Table 11, otherwise                10.2.2 Test for Effect on Water
not.
                                                               10.2.2.1 For this type test, the manufacturer or the
10.1.7 The lot, having satisfied the requirements              supplier shall furnish to the testing authority three
under 10.1.5 and 10.1.6, shall be tested for 9.4, 9.5,         samples of the smallest size of pipe taken from each
9.7, 9.8, 9.9, 9.11 and 9.12. For this, a sub-sample           machine (selected preferably from a regular
of 3 pipes from each lot irrespective of the lot size          production lot).
shall be selected from those tested under 10.1.5
and 10.1.6. All pipes in the sub-sample shall be               10.2.2.2 Three samples so selected shall be tested for
tested for requirements as specified in 9.4, 9.5, 9.7,         compliance with the requirements for effect on water
9.8, 9.9, 9.11 and 9.12. The lot shall be considered           as given in 9.10.
to have passed only if no failure is reported.
                                                               10.2.2.3 If all three samples pass the requirements
10.2 Type Tests                                                for effect on water, the type test of the pipe under
                                                               consideration shall be considered to be eligible for
These tests are intended to prove the suitability and          approval, which shall be normally valid for a period
performance of pipes whenever there is a change in             of one year.
the composition, size and type of pipe as well as in
the method/technique in the manufacturing process.             10.2.2.4 In case any of the samples fails in this test,
Tests specified in 9.6 and 9.10 shall be taken as              the testing authority, at its discretion, may call for
type test.                                                     fresh samples not exceeding the original number,
                                                               and subject them to the test for effect on water. If,
10.2.1 Izod Impact Strength Test
                                                               in the repeat test, no single failure occurs, the type
10.2.1.1 For this type test, the manufacturer or the           of pipe under consideration shall be considered
supplier shall furnish to the testing authority three          eligible for type approval. If any of the samples
samples of pipes of different diameters and different          fails in the repeat test, the type of pipe shall not be
classes of the same type (selected preferably from a           approved. The manufacturer or the supplier may be
regular production lot).                                       asked to improve the design and resubmit the
                                                               product for type approval.
10.2.1.2 Three samples so selected shall be tested
for compliance with the requirements of type test              10.2.2.5 At the end of the validity period (normally
as given in 9.6.                                               one year) or earlier, if necessary, the testing
                                                               authority may call for fresh samples for effect on
10.2.1.3 If all the three samples pass the requirements        water test for the purpose of type approval.
                                                          14
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Sl No.     Number          Nominal Size, DN                               For Tests Under 7, 8 and 9.1                                                              For Tests Under 9.2 and 9.3
           of Pipes
            in the
             Lot                 mm                 Sample             Cumulative               Acceptance              Rejection            Sub-Sample             Cumulative              Acceptance             Rejection
                                                                       Sample Size               Number                 Number                                      Sample Size              Number                Number
   NOTE — For test under 9.2, the numbers mentioned in col (10) to col (13) represent the number of times the test is to be carried out. They do not represent the number of pipe samples nor the number of blows nor the number of
   failures.
                                                                                                              15
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  Year     Month      Day     Machine       Shift         The product(s) conforming to the requirements of
                               No.                        this standard may be certified as per the conformity
  xxxx       xx       xx        xxx          x            assessment schemes under the provisions of the
                                                          Bureau of Indian Standards Act, 2016 and the
11.2 The information according to 11.1 shall be           Rules and Regulations framed thereunder, and the
marked in black colour and a strip of minimum             products may be marked with the Standard Mark.
3 mm width of colour as indicated below for
                                                     16
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                                                   ANNEX A
                                                    (Clause 2)
                                    LIST OF REFERRED STANDARDS
IS 4669 : 1968       Methods of test for polyvinyl               (Part 2) : 2004    Determination     of    Vicat
                     chloride resins                                                softening temperature
IS 4905 : 2015/ Random        sampling   and                     (Part 4) : 2004    Determining the detrimental
  ISO 24153 : randomization        procedures                                       effects on the composition of
  2009          (first revision)                                                    water
                                                        17
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                                                    ANNEX B
                                                    (Clause 9.6)
             METHOD OF TEST FOR DETENMINATION OF IZOD IMPACT STRENGTH
B-2 APPARATUS
                                                              B-4.1 The test shall be conducted in the same
                                                              atmosphere as that used for conditioning, unless
Apparatus required for the test are:                          otherwise agreed upon by the interested parties, for
    a) V-Notch cutting machine; and                           example for testing at high or low temperature. The
                                                              test piece shall be mounted on the pendulum impact
    b) Impact testing machine           as   per   the        testing machine as shown in Fig. 5 and the hammer
       requirements given below;                              shall be released to strike on the front side of the
                                                              notch of the test specimen. Striking energy
       1) The striker of the pendulum shall be                absorbed by the test specimen in joule shall be
          hardened steel and shall be a cylindrical           indicated on the scale of the impact testing
          surface having a radius of curvature of             machine.
          (0.80 ± 0.20) mm with its axis horizontal
          and perpendicular to the plane of swing
          of the pendulum; and                                B-4.2 The test piece shall be kept in vertical
                                                              position while testing the impact, and before
       2) The position of the pendulum holding                striking the specimen, the dissipation energy shall
          and releasing mechanism shall be such               be noted by releasing the hammer without test
          that the vertical height of fall of the             specimen. This dissipation energy shall be
          striker shall be (610 ± 2) mm. This will            subtracted from the energy absorbed by specimen
          produce a velocity of the striker at the            during the test and the reading shall be noted as G0,
          moment of impact of approximately                   in joule.
          3.5 m/s.
                                                              Izod impact strength of the specimen shall be
B-3 TEST SPECIMEN                                             calculated as:
                                                         18
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                                                  ANNEX C
                                                 (Clause 9.12)
                                      JOINT LEAK PRESSURE TEST
END FIXTURE
END FIXTURE
                       PIPE
                      SPIGOT                  THREADED                      PIPE BELL
                       END                    ASSEMBLY                         END
                                                         20
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ANNEX D
(Foreword)
COMMITTEE COMPOSITION
Organization Representative(s)
                                                        21
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Organization Representative(s)
NSF Safety and Certification India Pvt Ltd, Gurugram        SHRI B. B. SINGH
                                                               SHRI NASRIN KASHEFI (Alternate)
Panchayati Raj and Drinking Water Department,               CHIEF ENGINEER
   Govt. of Odisha, Bhubaneswar
                                                       22
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Organization Representative(s)
                                              Member Secretary
                                       SHRIMATI MADHURIMA MADHAV
                                        SCIENTIST ‘D’/JOINT DIRECTOR
                                         (CIVIL ENGINEERING), BIS
Organization Representative(s)
In Personal Capacity (A-59, Sector 35, Noida -            SHRI KANWAR A. SINGH (Convener)
    201301)
                                                    23
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Organization Representative(s)
                                                    24
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Organization Representative(s)
                                                 25
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Organization Representative(s)
Composition of the Working Group for UPVC Column Pipes, CED 50/WG2
Organization Representative(s)
                                                   26
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BIS is a statutory institution established under the Bureau of Indian Standards Act, 2016 to promote harmonious
development of the activities of standardization, marking and quality certification of goods and attending to
connected matters in the country.
Copyright
BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without
the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the
standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to
copyright be addressed to the Head (Publication & Sales), BIS.
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the website-
www.bis.gov.in or www.standardsbis.in.
This Indian Standard has been developed from Doc No.: CED 50 (15770).