Catalog 2018

ความเปนมา
็

The Thai Wire Products Public Company Limited

was established on May 10, 1985 to manufacture
prestressed concrete wire, or P.C. Wire for being used
in the construction industry.
The company started operations at its first plant
in Navanakorn Industrial Estate, PathumThani, on
July 2, 1986, Production capacity was continuously
increased by improving and modifying manufacturing
machineries. With the boom of the construction industry
in 1990, the company expanded its plant and invested
more in machineries to add a new product line, Seven-
Wire P.C. Strand.
In 1992, the company’s second plant was
established in the province of Ayutthaya to increase

Background
the production capacity of Seven-Wire P.C. Strand in
response to the demand of large-scale construction
projects for both the public and private sectors.
Over its years of operation, the company has
always been aware of its participating in developing the
country and its responsible to society. Thus, in 1996,
the company decided to invest for a new plant in the
Map Ta Phut Industrial Estate, Rayong Province, which
is in the Third Investment Promotion Zone, for further
production capacity expansion with new technology
applied to minimize pollution from manufacturing
processes and to improve the quality of the products.
Apart from that, the company introduced new products,
Galvanized Steel Wire and Strand.
The company moved its entire manufacturing
base to the new factory, which was granted promotion
certificate number 1829/2537 by the Board of Invest-
ment (BOI), in accordance with the government policy
to disemminate enterprises to provincial regions.

Capacity กำลังการผลิต
- Prestressed Concrete Single Wire 72,000 tons / year
- ลวดเหล็กแรงดึงสูงชนิดเดียว 72,000 ตัน / ปี
- Seven-Wire Prestressed
- ลวดเหล็กตีเกลียวชนิด 7 เส้น 54,000 ตัน / ปี
Concrete Strand 54,000 tons / year
- ลวดเหล็กเคลือบสังกะสี 9,600 ตัน / ปี
- Galvanized Steel Wire and Strand 9,600 tons / year
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 QSHE

Certificate เครือ่ งหมายการรับรอง (Logo) เว็บไซต์ (Website)

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 Quality Products
Prestressed Concrete Wire and Strand
PRESTRESSED CONCRETE WIRE PRESTRESSED CONCRETE STRAND
- Diameter : 4, 5, 6, 7, 9 mm. 7.9,9.3,9.5,11.3,12.4,12.7,15.2,15.7 mm.
5/16, 3/8, 7/16, 1/2, 0.6 inch
- Type : Stress relieved 3 - Wire stress relieved
7 - Wire stress relieved
- Grade : 1470 - 1860 Mpa. 1720 - 1920 Mpa.
- Surface configuration : Plain, Indented, Crimped Plain
- Relaxation : Normal / Low Normal / Low
- Special Treatment (option) : - Zinc coating
Standard ISO 6934-2 ISO 6934-4
TIS 95 TIS 420
ASTM A 421 ASTM A 416
BS 5896 BS 5896
JIS G 3536 JIS G 3536
AS / NZS 4672.1 AS / NZS 4672.1
pr EN 10138-2 pr EN 10138-3

Galvanized Steel Wire and Strand

STANDARD TYPE SIZE
A) Galvanized Steel Wire & Strand
for Guying Purpose
- TIS 71 Ground Wire and General purpose. 0.6 - 5.0 mm.
- TIS 404 Overhead Ground Wire Strand and 25, 35, 50 mm.2
Guy Wire Strand.
- ASTM A 363 Overhead Ground Wire Strand. 5/16, 3/8, 7/16”
- ASTM A 475 Guys. Span Wires and for Similar 3/16, 5/16, 3/8, 7/16, 1/2 ”
Purpose.
B) Galvanized Steel Core Wire
and Strand for A.C.S.R.
- TIS 2221 Steel Core Wire for A.C.S.R. 1.80 - 3.20 mm.
- ASTM B 498 1.68 - 4.80 mm.
- TIS 2221 Standard Steel Core Wire for A.C.S.R. 7/1.44 - 7/3.60 mm.
- ASTM B 498 / 500 7/1.57 - 7/3.52 mm.
C) Zinc Coated Steel Strand for
Messenger Support
- ASTM A 640 Steel Strand for Messenger Support. 1/4” (7/2.03 mm.)
- ASTM A 475 Steel Strand for Fiber Optic Cable. 7/1.04 - 7/2.03 mm.

STANDARD
Steel Wire
TYPE SIZE
JIS G 3521 Hard Drawn Steel Wire
SW - A, B, C for use as Springs, Spoke Wire 1.00 - 10.00 mm.
for bicycle wheels.
TIS 194 Low Carbon Steel Wire 1.00 - 10.00 mm.
for general purpose.
TIS 747 Standard for Cold - Drawn Steel Wire 2.00 - 7.00 mm.
for Concrete Reinforcement.
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 Process Chart
1. Prestressed concrete wire

Wire Rod Pickling Drawing

2. Prestressed concrete strand

Wire Rod Pickling Drawing

3. Galvanized steel Wire and Strand

Wire Rod Pickling Drawing

4. Steel Wire

Wire Rod Pickling Drawing

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Stabilizing Process Packing Prestressed concrete wire

Stranding Stabilizing Process Packing Prestressed concrete strand

Desoaping Pickling Galvanizing Galvanized steel wire

Stranding Packing Galvanized steel strand

Recoiling Pickling Steel wire

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 Load (KN) Load Strain Curve
25.00
Modulus of elasticity
20.00 = 205 + 10 kN/mm.2

15.00

10.00

5.00
PC Wire 04 - 1770N
0.00
0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Strain (%)

Load (KN)
200.00
Load Strain Curve
Modulus of elasticity
= 195 + 10 kN/mm.2
150.00

100.00

50.00
PC Strand 12.7 - 1860N
0.00
0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Strain (%)

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 Load (KN)
40.00
Load Strain Curve
35.00 Modulus of elasticity
= 205 + 10 kN/mm.2
30.00
25.00
20.00
15.00
10.00
5.00 PC Wire 05 - 1770N
0.00
0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Strain (%)

NORMAL AND LOW RELAXATION

0
RELAXATION LOSS (%)

1
Low Relaxation
2

3 Normal Relaxation

4
0 10 100 1000

TESTING TIME (HOURS)

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 PRESTRESSED CONCRETE WIRE
Nominal Nominal cross- Mass per length Characteristics
STANDARD diameter sectional area Nominal Permissible variation Fm min Fm max Fp 0.1 min
Grade (mm.) (mm.2) (g/m) (g/m) (kN) (kN) (kN)
1470N 9 63.6 499 + 7.2 93.5 - 74.8
1570N 7 38.5 302 + 4.3 60.4 - 50.1
8 50.3 395 + 5.9 79.0 - 65.6
TIS 95 - 2540 4 12.6 98.9 + 2.0 21.0 - 17.5
5 19.6 154 + 3.1 32.7 - 27.2
ISO 6934 - 2:1991 1670N 6 28.3 222 + 3.7 47.3 - 39.3
7 38.5 302 + 4.3 64.3 - 53.4
AS/NZS 4672.1:2007 8 50.3 395 + 5.9 84.0 - 69.7
4 12.6 98.9 + 2.0 22.3 - 18.5
1770N 5 19.6 154 + 3.1 34.7 - 28.8
6 28.3 222 + 3.7 50.1 - 41.6
+
4 0.04 12.57 98.7 - 21.1 -
SWPR 5 + 0.05 19.64 154 - 31.9 -
JIS G3536 : 2008 1A 7 + 0.05 38.48 302 - 58.3 - -
9 + 0.06 63.62 499 - 90.2 -
SWPR 5 + 0.05 19.64 154 - 33.8 -
1B 7 + 0.05 38.48 302 - 62.3 -
4 12.6 98.4 22.3 25.6 19.6
Y1770C 5 19.6 153.1 34.7 39.9 30.5
prEN10138-2 : 2006 7 38.5 300.7 68.1 78.3 59.9
Y1860C 4 12.6 98.4 23.4 26.9 20.8
5 19.6 153.1 36.5 42.0 32.5
Y1570C 7 38.5 300.7 60.4 69.5 53.2
4 12.6 98.4 + 2.0% 21.0 24.2 18.5
Y1670C 5 19.6 153.1 32.7 37.6 28.8
6 28.3 221.0 47.3 54.4 41.6
BS 5896 : 2012 7 38.5 300.7 64.3 73.9 56.6
4 12.6 98.4 22.3 25.6 19.6
Y1770C 5 19.6 153.1 34.7 39.9 30.5
6 28.3 221.0 50.1 57.6 44.1
Y1860C 5 19.6 153.1 36.5 42.0 32.5
Nominal Nominal cross- Mass per length Characteristics
STANDARD diameter sectional area Nominal Permissible deviation Tensile Strength 0.1% Proof stress
Grade (mm.) (mm.2 ) (g/m) (%) (MPa) (MPa)
4.88 + 0.05 18.7 1725
WA
* 4.98 + 0.05 19.5 1725
ASTM A421 / A421-15 6.35 + 0.05 31.7 1655
7.01 + 0.05 38.6 - - 1620 -
LOW RELAXATION +
4.98 0.05 19.5 1655
BA** 6.35 + 0.05 31.7 1655
7.01 + 0.05 38.6 1620
Remarks: WA* = Wedge Anchorage, BA** = Botton Anchorage, 1* Initial load as percentage of specific minimum breaking load (Fm)., 2* Initial load

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 SPECIFICATION COMPARISON
(Minimum) Elongation Reverse bend Curvature / Max. % Relaxation at 1,000 hr.
Fp 0.2 min Fp 1.0 min (Min.) (Min.) Straightness Low Relaxation Normal Relaxation
(kN) (kN) (%) Time x Radius 60% 70% 80% 60% 70% 80%
76.7 3 x 25 mm.
51.3 3 x 20 mm. TIS 95 - 2540 (Table 3) /
67.1 3 x 20 mm. Arc height ISO 6934 - 2:1991 (Table 3)
17.9 3 x 10 mm. *1 *1
27.8 3 x 15 mm. not greater 1.0*1 2.5*1 4.5 4.5*1 8.0*1 12.0
40.2 - 3.5 3 x 15 mm. than 30 mm.
54.7 3 x 20 mm. Over gauge
71.4 3 x 20 mm. AS/NZS 4672.1:2007 (Table 3.2)
19.0 3 x 10 mm. length 1 m.
*1
29.5 3 x 15 mm. 1.0*1 2.0*1 3.0 3.5*1 6.5*1 10.0*1
42.6 3 x 15 mm.
18.6 3.5
27.9 4.0
51.0 - 4.5 - - - 2.5*1 - - 8.0
*1
-
78.0 4.5
29.9 4.0
54.9 4.5
3 x 10 mm.
3 x 15 mm.
3 x 20 mm.
3 x 10 mm.
3 x 15 mm.
3 x 20 mm.
- - 3.5 3 x 10 mm. 25 mm. - 2.5*2 4.5
*2
- 8.0
*2
-
VI

3 x 15 mm.
3 x 15 mm.
3 x 20 mm.
3 x 10 mm.
3 x 15 mm.
3 x 15 mm.
3 x 15 mm.
Elongation Reverse bend Curvature / Max. % Relaxation at 1,000 hr.
0.2% Proof stress 1.0% Proof stress (Min.) (Min.) Straightness Low Relaxation Normal Relaxation
(MPa) (MPa) (%) Time x Radius 60% 70% 80% 60% 70% 80%
1465
1465 Arc height
1407 not more than
- 1377 4.0 - 75 mm. - 2.5*3 3.5
*3
- - -
1407 Over gauge
1407 length 1500 mm.
1377
aspercentage of specific actualmaximum force (Fma), 3* Initial load as percentage of specific minimum tensile strength

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 PRESTRESSED CONCRETE STRAND
Nominal Nominal cross- Mass per length
STANDARD diameter sectional area Nominal Permissible variation Fm min Fm max
Grade (mm.) (mm.2 ) (g/m) (g/m) (kN) (kN)
9.3 51.6 405.0 396.9 - 421.2 88.8 -
1720 12.4 92.9 729.0 714.4 - 758.2 160.0 -
TIS 420 - 2540 15.2 139.0 1101.0 1079.0 - 1145.0 239.0 -
ISO 6934 - 4 : 1991 9.5 54.8 432.0 423.4 - 449.3 102.0 -
1860 12.7 98.7 774.0 758.5 - 805.0 184.0 -
15.2 139.0 1101.0 1079.0 - 1145.0 259.0 -
1750 15.2 143.0 1122.0 1099.6 - 1166.9 250.0 -
AS / NZS 4672.1 : 2007 1830 15.2 143.0 1122.0 1099.6 - 1166.9 261.0 -
7 wire ordinary
1850 9.5 55.0 432.0 423.4 - 449.3 102.0 -
common size
1870 12.7 98.6 774.0 758.5 - 805.0 184.0 -
9.3 51.6 405.0 396.9 - 421.2 88.8 -
1720 10.8 69.6 546.0 535.1 - 567.8 120.0 -
12.4 92.9 729.0 714.4 - 758.2 160.0 -
AS / NZS 4672.1 : 2007 1790 15.2 140.0 1101.0 1079.0 - 1145.0 250.0 -
7 wire ordinary 1840 12.9 100.0 785.0 769.3 - 816.4 186.0 -
other size 1850 8.1 40.1 315.0 308.7 - 327.6 74.0 -
1860 15.2 140.0 1101.0 1079.0 - 1145.0 261.0 -
7.9 36.9 290.0 284.2 - 301.6 69.0 -
1870
11.1 73.9 580.0 568.4 - 603.2 138.0 -
Y1670S7 15.2 139.0 1086.0 232.0 267.0
9.3 52.0 406.1 92.0 106.0
11.0 70.0 546.7 124.0 143.0
Y1770S7
12.5 93.0 726.3 165.0 190.0
15.7 150.0 1172.0 266.0 306.0
8.0 38.0 296.8 70.7 81.3
BS 5896 : 2012 9.3 52.0 406.1 + 2.0% 96.7 111.0
9.6 55.0 429.6 102.0 117.0
11.3 75.0 585.8 140.0 161.0
Y1860S7
12.5 93.0 726.3 173.0 199.0
12.9 100.0 781.0 186.0 214.0
15.2 139.0 1086.0 259.0 298.0
15.7 150.0 1172.0 279.0 321.0
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SPECIFICATION COMPARISON
Characteristics Elongation Curvature Max. % Relaxation at 1,000 hr.
Fp 0.1 min Fp 0.2 min (Min.) (Max.) Low Relaxation Normal Relaxation
(kN) (kN) (%) (mm/m) 60% 70% 80% 60% 70% 80%
72.8 75.4
131.0 136.0
196.0 203.0
3.5 25 1.0 2.5 4.5 4.5 8.0 12.0
83.6 86.6
151.0 156.0
212.0 220.0
205.0 212.0 25
214.0 222.0 25
3.5 - 2.5 3.5 - 8.0 12.0
83.6 86.6 35
151.0 156.0 25
72.8 75.4 35
98.4 102.0 25
131.0 136.0 25
205.0 212.0 25
158.0 165.0 3.5 25 - 2.5 3.5 - 8.0 12.0
60.7 62.9 35
214.0 222.0 25
56.0 58.7 35
113.0 117.0 25
204.0
81.0
109.0
145.0
234.0
62.2
85.1 - 3.5 25 1.0 2.5 4.5 - - -
89.8
123.0
152.0
164.0
228.0
246.0
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 PRESTRESSED CONCRETE STRAND
Nominal Nominal cross- Mass per length
STANDARD diameter sectional area Nominal Permissible variation Fm min Fm max
Grade (mm.) (mm.2 ) (g/m) (g/m) (kN) (kN)
Y1770S7 15.7 150.0 1172.0 266.0 314.0
9.3 52.0 406.1 96.7 114.0
9.6 55.0 429.6 102.0 120.0
prEN 10138 - 3 :2006 + 2.0%
Y1860S7 12.5 93.0 726.3 173.0 204.0
12.9 100.0 781.0 186.0 220.0
15.2 139.0 1086.0 259.0 306.0
Strand diameter Nominal
Nominal cross-
STANDARD Nominal Permissible sectional area Mass per
variation length Fm min Fm max
Grade (mm.) (mm.) (mm.2 ) (g/m) (kN) (kN)
6.4 23.2 182 40.0 -
7.9 37.4 294 64.5 -
9.5 51.6 405 89.0 -
1725 + 0.40
11.1 69.7 548 120.1 -
ASTM A416 / A416M-10 12.7 92.9 730 160.1 -
(Low Relaxation) 15.2 139.4 1094 240.2 -
9.53 54.8 432 102.3 -
11.11 74.2 582 137.9 -
1860 + 0.65, - 0.15
12.70 98.7 775 183.7 -
15.24 140.0 1102 260.7 -
9.3 51.61 405.0 88.8 -
10.8 + 0.4, - 0.2 69.68 546.0 120.0 -
SWPR7A
12.4 92.90 729.0 160.0 -
15.2 138.7 1101.0 240.0 -
JIS G3536 : 2008
9.5 54.84 432.0 102.0 -
SWPR7B 11.1 + 0.4, - 0.2 74.19 580.0 138.0 -
12.7 98.71 774.0 183.0 -
15.2 138.7 1101.0 261.0 -

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SPECIFICATION COMPARISON
Characteristics Elongation Curvature Max. % Relaxation at 1,000 hr.
Fp 0.1 min Fp 0.2 min (Min.) (Max.) Low Relaxation Normal Relaxation
(kN) (kN) (%) (mm/m) 60% 70% 80% 60% 70% 80%
234.0
85.1
89.8
- 3.5 25 - 2.5 4.5 - - -
152.0
164.0
228.0

Characteristics Elongation Curvature Max. % Relaxation at 1,000 hr.

(Min.) (Max.)
Fp 0.2 min Fp 1.0 min Low Relaxation Normal Relaxation
(kN) (kN) (%) (mm/m) 60% 70% 80% 60% 70% 80%
36.0
58.1
80.1
108.1
144.1
- 3.5 - - 2.5 3.5 - - -
216.2
92.1
124.1
165.3
234.6
75.5
102.0
136.0
204.0
- 3.5 - - 2.5 - - 8.0 -
86.8
118.0
156.0
222.0

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 Handling, Storage
& Safe Working
Suggestions for Safety in Handling,
Storage and Installation
Prestessed concrete wire and strand require great caution because they can be easily
damaged by improper handling, storagr and installation. Users are urged to follow the
following recommendations.
1. The micro structure of steel and mechanical properties of the material may be
changed if exposed to excessive heat. Therefore sources of heat should be avoided.
2. Cutting should be done by a cutter or high speed disc. Avoid cutting with
oxy-acetylene torches or welding electrodes because even a small spark will cause
a defect in the wire at that point and this may cause the wire to fail under tension.
3. Handling should be kept minimum. Abrassion on concrete floor and scratches
may change the material’s mechanical characteristics and cause the wire under
tension to break.
4. For long storage, the material should be kept in dry warehouse with good
ventilation.
5. The material should not be laid on bare ground because contamination may cause
slippage of the concrete. Steel or wood pallets or rubber sheets should be
provided.
6. Do not bend the material in a very tight radius because this will cause a permanent
bend. Do not place heavy objects on the wire, and do not allow chemical and oil to
come into contact with it.
7. When under tension, do not sit, walk on or strike the wire since this may cause it to
break. Safety walls or guards around the anchorage ends are strongly recommended.

คำแนะนำ การขนย้าย กองเก็บ และใช้งานอย่างปลอดภัย

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Standard Packing
ขนาดม้วนมาตรฐาน วงนอก (Outside Diameter)

วงใน (Inside Diameter)

P.C. Strand
ลวดเหล็กตีเกลียว ชนิด 7 เส้น
วงใน วงนอก ความหนา ้ กโดยประมาณ
นำหนั ความหนา
(Width)
Inside Outside Width Weight
Diameter Diameter
(cm.) (cm.) (cm.) Approx (kg.)

80 140 75 3,000

วงนอก (Outside Diameter)

P.C. Wire (Single) วงใน (Inside Diameter)
ลวดเหล็กแรงดึงสูง ชนิดเส้นเดีย่ ว
ขนาดเส้นผ่าศูนย์กลางลวด วงใน ้ กโดยประมาณ
นำหนั
Wire Inside Weight
Diameter (cm.) Diameter (cm.) Approx (kg.)
4.0 150 500 - 1,200
5.0 150 500 - 1,200
7.0 180 500 - 1,200
9.0 180 500 - 1,200

Standard Packing
Diameter Coil weight
(mm.) Coil (kg.) Spool (kg.) Stem (kg.)
1.20 - 4.00 100 - 300 200 - 500 400 - 700
4.10 - 10.00 100 - 300 200 - 500 500 - 1,000

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 Hard drawn steel wires JIS G 3521 : 1991
Diameter (mm.) Tensile strength (N/mm.2) Number
Nominal Tolerance SW - A SW - B SW - C of twists
2.00 + 0.030 1,270 to 1,470 1,470 to 1,720 1,720 to 1,960 20

IV IV IV IV IV IV IV IV IV IV IV
2.30 1,230 to 1,420 1,420 to 1,670 1,670 to 1,910 15
2.60 + 0.040 1,230 to 1,420 1,420 to 1,670 1,670 to 1,910 15
2.90 1,180 to 1,370 1,370 to 1,620 1,620 to 1,860 15
3.20 1,180 to 1,370 1,370 to 1,570 1,570 to 1,810 15
3.50 1,180 to 1,370 1,370 to 1,570 1,570 to 1,770 15
4.00 1,180 to 1,370 1,370 to 1,570 1,570 to 1,770 10
4.50 + 0.050 1,130 to 1,320 1,320 to 1,520 1,520 to 1,720 10
5.00 1,130 to 1,320 1,320 to 1,520 1,520 to 1,720 10
5.50 1,080 to 1,270 1,270 to 1,470 1,470 to 1,670 10
6.00 1,030 to 1,230 1,230 to 1,420 1,420 to 1,620 10
6.50 + 0.060 1,030 to 1,230 1,230 to 1,420 1,420 to 1,620 -
7.00 980 to 1,180 1,180 to 1,370 1,370 to 1,570 -
8.00 980 to 1,180 1,180 to 1,370 1,370 to 1,570 -
9.00 + 0.070 930 to 1,130 1,130 to 1,320 1,320 to 1,520 -
10.00 930 to 1,130 1,130 to 1,320 1,320 to 1,520 -

Ordinary Low Carbon Steel Wires ÁÍ¡. 194 - 2535

Diameter (mm.) ความตา้นแรงดงึลวด Diameter (mm.) ความตา้นแรงดงึลวด
Nominal Tolerance Tensile strength (N/mm.2) Nominal Tolerance Tensile strength (N/mm.2 )
1.20 - 3.00 + 0.08 540 to 1,080
1.40 + 0.05 - 3.50 440 to 930
1.60 - 4.00 + 0.10 440 to 930
1.80 + 0.06 590 to 1,180 4.50 440 to 930
2.00 590 to 1,180 5.00 390 to 830
2.20 590 to 1,180 6.00 + 0.13 390 to 830
2.50 + 0.08 540 to 1,080 7.50 + 0.15 390 to 830
2.80 540 to 1,080 8.00 390 to 830

มอก. 747 - 2531 มาตรฐานผลติภณ

ั ฑอ์ตุสาหกรรมลวดเหลก็กลา้ดงึเยน็เสรมิคอนกรตี
STANDARD FOR COLD - DRAWN STEEL WIRE FOR CONCRETE REINFORCEMENT
Tolerance Nominal cross- Tensile 0.5% Proof Reduction Bend
Symbol Nom. Dia of diameter sectional2 area strength strength of area Radius o
(mm.) (mm.) (mm. ) (MPa) (MPa) (%) (1d x 180 )
CDR 2.0 2.0 3.14
CDR 2.3 2.3 4.16
CDR 2.6 2.6 5.31
CDR 3.0 3.0 7.07 ตอ้งไมม่ี
CDR 3.3 3.3 8.56 รอยรา้ว
CDR 3.6 3.6 10.18
CDR 4.0 4.0 12.57 หรอืปรแิตก
CDR 4.3 4.3 + 0.1 14.53 550 485 30 สว่นโคง้
IV

IV

IV

CDR 4.6 4.6 16.63 ดา้นนอก

CDR 5.0 5.0 19.64
CDR 5.3 5.3 22.07 ของชนิ้
CDR 5.6 5.6 24.64 ทดสอบ
CDR 6.0 6.0 28.29
CDR 6.5 6.5 33.20
CDR 7.0 7.0 38.50

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 Galvanized Steel
Group A: Galvanized Steel Wire and Strand for use
as Grounds, guy wires and similar purpose
A1) ÁÍ¡. 71 - 2532 ÊÓËÃѺÊÒ´Թ áÅЧҹ·ÑèÇä»»
¤Ø³ÊÁºÑ˜Ô Poperties ˹èÇÂÇÑ´ ¢¹Ò´ÃÐºØ Nominal Diameter
Unit 0.8 (Min.) 4.0 6.0 (Max.)
ªÑ¹é ¤Ø³ÀÒ¾¡ÒÃà¤Å×ͺ Coating class ¡(A) ¢(B) ¡(A) ¢(B) ¡(A) ¢(B)
¢¹Ò´ÅÇ´ Diameter of wire mm. 0.8 4.0 6.0
¤ÇÒÁ¤ÅÒ´à¤Å×Íè ¹·ÕÂè ÍÁãËé Permissible in diameter mm. + 0.05 + 0.1 + 0.15
¤ÇÒÁ·¹˜èÍáç´Ö§ Tensile strength N/mm.2 300 - 50 300 - 50 300 - 50
¤ÇÒÁ·¹˜èÍ¡ÒúԴ Torsion test turns - - - 25 - 15

IV

IV
¤ÇÒÁ˜Ô´á¹è¹¢Í§Êѧ¡ÐÊÕ Wrapping test turns/mm. - 6 / 6d - 6 / 12d - 6 / 14d
è
¤ÇÒÁÊÁÓàÊÁͧ͢ÊÑ §¡ÐÊÕ Unifomity test minute - 1 1 3 1 3
ÁÇÅÊѧ¡ÐÊÕ Minimum weight of zinc coating g/m.2 - 76 57 153 83 153

A2) ÁÍ¡. 404 - 2540»

˹èÇÂÇÑ´ ¢¹Ò´ÃÐºØ Nominal Size (mm.2)
¤Ø³ÊÁºÑ˜Ô Properties
Unit 25 35 50
ªÑ¹é ¤Ø³ÀÒ¾áç´Ö§ Grade à͹¡»ÃÐʧ¤ì Utilities
ªÑ¹é ¤Ø³ÀÒ¾¡ÒÃà¤Å×ͺ Coating class ¡. ¡. ¡.
¢¹Ò´ÅÇ´˜Õà¡ÅÕÂÇ Nominal diameter of strand mm. 6.30 7.50 9.00
¨Ó¹Ç¹àÊé¹ÅÇ´ Number of wires 7 7 7
¢¹Ò´ÅÇ´ Diameter of wire mm. 2.10 + 0.08 2.50 + 0.10 3.00 + 0.10
ÁÇŘèͤÇÒÁÂÒÇ Nominal mass per lenght kg/km 192 272 392
¤ÇÒÁ˜éÒ¹áç´Ö§ÊÙ§ÊØ´ Minimum breaking strength N 16,150 22,850 32,900
¤ÇÒÁÂ×´ Minimum elongation % 4 4 4
¤ÇÒÁ˜Ô´á¹è¹¢Í§Êѧ¡ÐÊÕ Adherence test turns/mm. 2/3d 2/3d 2/3d
ÃÐÂЪèǧà¡ÅÕÂÇ Lay ratio 16D 16D 16D
VI

VI
VI

ÁÇÅÊѧ¡ÐÊÕ Minimum weight of zinc coating g/m.2 214 214 259

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A3) ASTM A363 - 03 (Reapproved 2014) Standard Specification for Zinc
Steel Overhead Ground Wire Strand
หน่วยวัด ขนาดระบุ Nominal Diameter
คุณสมบัติ Properties Unit 7.94 (5/16”) 9.52 (3/8”) 11.11 (7/16”) 12.70 (1/2”) 7.94 (5/16”)
ชัน้ คุณภาพแรงดึง (Grade) - High Strength
้
ชันคุณภาพการเคลือบสังกะสี (Coating class) - A
2
มวลสังกะสี (Minimum weight of zinc - coating) g/m. 240 260 270 270 240
จำนวนเส้นลวด (Number of wires) - 7 7 7 7 7
ขนาดลวด (Wire diemeter) mm. 2.64 + 0.102 3.05 + 0.102 3.68 + 0.127 4.19 + 0.127 2.64 + 0.102
ขนาดลวดตีเกลียวระบุ (Nominal diameter of strand) mm. 7.94 9.52 11.11 12.7 7.94
้ ่
พืนทีหน้าตัดระบุ (Nominal Cross - sectional area) mm. 2
38.32 51.14 74.45 96.52 38.32
2
ความทนแรงดึงระบุ (Nominal Tensile strength*) N/mm. 929 939 866 866 1,300
ความต้านแรงดึง (Minimum breaking load) kN 35.6 48.0 64.5 83.6 49.8
ความยืด (Minimum Elongation) % 5 5 5 5 4
IV

IV

IV
IV

IV
มวลต่อความยาว (Nominal mass per length) kg/km 305 407 595 770 305
ความติดแน่นของสังกะสี (Adherence test) turns/mm. 2/3d 2/3d 2/3d 2/3d 2/3d
สภาพดึงยืดได้ (Ductility - Wrap test) turns/mm. 2/3d 2/3d 2/3d 2/3d 2/3d
ระยะช่วงเกลียว (Lay ratio) - 16d 16d 16d 16d 16d
VI

VI
VI

VI

VI
*Remarks: The nominal tensile strength for information only (calculat from minimum breaking load divide by nominal cross-sectional area)

A4) ASTM A475 - 03 (Reapproved 2014) Standard Specification for Zinc

คุณสมบัติ Properties หน่วยวัด
Unit 4.76 (3/16”) 5.56 (7/32”) 6.35 (1/4”) 7.14 (9/32”) 7.94 (5/16”)
ชั้นคุณภาพแรงดึง (Grade) - High Strength
้
ชันคุณภาพการเคลือบสังกะสี (Coating class) - A
2
มวลสังกะสี (Minimum weight of zinc - coating) g/m. 153 153 183 214 244
จำนวนเส้นลวด (Number of wires) - 7 7 7 7 7
ขนาดลวด (Wire diemeter) mm. 1.57 + 0.08 1.83 + 0.08 2.03 + 0.08 2.36 + 0.10 2.64 + 0.10
ขนาดลวดตีเกลียวระบุ (Nominal diameter of strand) mm. 4.76 5.56 6.35 7.14 7.94
้ ่
พืนทีหน้าตัดระบุ (Nominal Cross - sectional area) mm. 2
13.55 18.41 22.66 30.62 38.32
2
ความทนแรงดึงระบุ (Nominal Tensile strength) N/mm. 936 930 932 930 929
ความต้านแรงดึง (Minimum breaking load) kN 12.677 17.126 21.129 28.469 35.586
ความยืด (Minimum Elongation) % 5 5 5 5 5
IV

IV
IV

IV

IV

มวลต่อความยาว (Nominal mass per length) kg/km 109 146 180 244 305
ความติดแน่นของสังกะสี (Adherence test) turns/mm. 2/3d 2/3d 2/3d 2/3d 2/3d
สภาพดึงยืดได้ (Ductility - Wrap test) turns/mm. 2/3d 2/3d 2/3d 2/3d 2/3d
ระยะช่วงเกลียว (Lay ratio) - 16d 16d 16d 16d 16d
VI

VI
VI

VI

VI

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- Coated (Galvanized) A5) มอก.2221-2548 ลวดเหล็กกล้าเคลือบสังกะสี
สำหรับตัวนำเกลียว (Zinc - Coated Steel Wire
for Stranded Conductors)
9.52 (3/8”) 11.11 (7/16”) 12.70 (1/2”)
Extra High Strength Wire Coating Tensile
TYPE diameter Strength
A (mm.) Class (MPa)
260 270 270
ลวดเหล็กกล้าต้านแรงดึงสูงปกติ 1 (A) 1,100 - 1,340
7 7 7
(Regular Strength) 2 (B) 1,000 - 1,240
3.05 + 0.102 3.68 + 0.127 4.19 + 0.127
ลวดเหล็กกล้าต้านแรงดึงสูง 1.25 - 5.50 1 (A) 1,170 - 1450
9.52 11.11 12.7
(High Strength) 2 (B) 1,100 - 1,380
51.14 74.45 96.52
ลวดเหล็กกล้าต้านแรงดึงสูงพิเศษ 1 (A) 1,270 - 1,620
1,338 1,442 1,239
(Extra High Strength)
68.4 92.5 119.6
4 4 4
IV

IV

IV

407 595 770

2/3d 2/3d 2/3d
2/3d 2/3d 2/3d
16d 16d 16d
VI

VI

VI

- Coated Steel Wire Strand

ขนาดระบุ Nominal Diameter
9.52 (3/8”) 11.11 (7/16”) 12.70 (1/2”) 4.76 (3/16”) 5.56 (7/32”) 6.35 (1/4”) 7.14 (9/32”) 7.94 (5/16”) 9.52 (3/8”) 11.11 (7/16”) 12.70 (1/2”)
Extra High Strength
A
259 275 275 153 153 183 214 244 259 275 275
7 7 7 7 7 7 7 7 7 7 7
3.05 + 0.10 3.68 + 0.13 4.19 + 0.13 1.57 + 0.08 1.83 + 0.08 2.03 + 0.08 2.36 + 0.10 2.64 + 0.10 3.05 + 0.10 3.68 + 0.13 4.19 + 0.13
9.52 11.11 12.7 4.76 5.56 6.35 7.14 7.94 9.52 11.11 12.7
51.14 74.45 96.52 13.55 18.41 22.66 30.62 38.32 51.14 74.45 96.52
939 866 866 1,310 1,305 1,305 1,300 1,300 1,340 1,243 1,240
48.040 64.499 83.627 17.748 24.020 29.581 39.812 49.820 68.503 92.523 119.657
5 5 5 4 4 4 4 4 4 4 4
IV

IV
IV

IV

IV
IV

IV

IV

IV

IV

IV

407 595 770 109 146 180 244 305 407 595 770
2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d
2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d 2/3d
16d 16d 16d 16d 16d 16d 16d 16d 16d 16d 16d
VI

VI

VI

VI

VI
VI

VI

VI
VI

VI

VI

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 Group B: Galvanized Steel Core Wire and Strand
for ACSR (Aluminium conductors steel reinforced)
B1) ASTM B500/B500M-12 Standard Specification for Metallic Coated
Stranded Steel Core for Use in Overhead Electrical Conductors
หน่วยวัด ขนาดระบุ Nominal Diameter
คุณสมบัติ Properties
Unit 7 / 2.46 7 / 2.89 7 / 3.00 7 / 3.06 7 / 3.37
ชัน้ คุณภาพการเคลือบสังกะสี (Coating class) - A
มวลสังกะสี (Minimum weight of zinc - coating) g/m.2 229 244 244 259 259
จำนวนเส้นลวด (Number of wires) - 7 7 7 7 7
ขนาดลวด (Wire diemeter) mm. 2.46 2.89 3.00 3.06 3.37
เกณฑ์ความคลาดเคลือ่ นของขนาดลวด (Permissible mm. + 0.051 + 0.051 + 0.051 +0.076 / -0.051 +0.076 / -0.051
variation in diameter)
ขนาดลวดตีเกลียวระบุ (Nominal diameter of strand) mm. 7.38 8.67 9.00 9.18 10.11
ความทนแรงดึง (Calculated Tensile strength) MPa 1,410 1,410 1,410 1,410 1,410
ความเค้นพิสจู น์ (Stress at 1.0 % Extension) MPa 1,280 1,280 1,280 1,240 1,240
ความยืด (Minimum Elongation) % 3.5 3.5 3.5 4 4
IV

IV

IV
IV
IV

ความติดแน่นของสังกะสี (Adherence test) turns/mm. 8/4d 8/4d 8/4d 8/5d 8/5d

สภาพดึงยืดได้ (Ductility - Wrap test) turns/mm. 8/2d 8/2d 8/2d 8/2d 8/2d
ระยะช่วงเกลียว (Lay ratio) - 16 - 26 16 - 26 16 - 26 16 - 26 16 - 26

B2) ASTM B498/B498M-08 (Reapproved 2016) Standard Specification for

Zinc - Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
หน่วยวัด ขนาดระบุ Nominal Diameter
คุณสมบัติ Properties Unit 2.46 2.89 3.00 3.06 3.37
ชัน้ คุณภาพการเคลือบสังกะสี (Coating class) - A
มวลสังกะสี (Minimum weight of zinc - coating) g/m.2 229 244 244 259 259
จำนวนเส้นลวด (Number of wires) mm. 2.46 2.89 3.00 3.06 3.37
เกณฑ์ความคลาดเคลื่อนของขนาดลวด (Permissible + 0.051 + 0.051 + 0.051 +0.076 / -0.051 +0.076 / -0.051
mm.
variation in diameter)
ความทนแรงดึงระบุ (Nominal Tensile strength) MPa 1,410 1,410 1,410 1,410 1,410
ความเค้นพิสจู น์ (Stress at 1% Extension) MPa 1,280 1,280 1,280 1,240 1,240
ความยืด (Minimum Elongation) % 3.5 3.5 3.5 4 4
IV

IV
IV

IV

IV

ความติดแน่นของสังกะสี (Adherence test) turns/mm. 8/4d 8/4d 8/4d 8/5d 8/5d

สภาพดึงยืดได้ (Ductility - Wrap test) turns/mm. 8/2d 8/2d 8/2d 8/2d 8/2d

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Group C: Galvanized Steel Strand for fiber obtic
cable.
หน่วยวัด ขนาดระบุ Nominal Diameter
คุณสมบัติ Properties
Unit 7 / 2.03 7 / 1.65 7 / 1.57 7 / 1.32 7 / 1.20 7 / 1.04

Reference Standard ASTM A640 ASTM A475 ASTM A640 ASTM A475 ASTM A475 ASTM A475

ชัน้ คุณภาพแรงดึง Grade Extra Hight Strength

ชัน้ คุณภาพการเคลือบ Coating class - A A A A A A

ความทนแรงดึงระบุ Nominal tensile strength N/mm.2 1,305 1,310 1,310 1,365 1,387 1,369

พื้นทีห่ น้าตัดระบุ Nominal cross sectional area mm.2 22.66 14.97 13.55 9.58 7.95 5.95

ขนาดลวดตีเกลียว Nominal diameter of strand mm. 6.35 4.76 4.76 3.97 3.65 3.18
จำนวนเส้นลวด Number of wires - 7 7 7 7 7 7

ขนาดลวด Diameter of wire mm. 2.03 + 0.08 1.65 + 0.08 1.57 + 0.08 1.32 + 0.05 1.20 + 0.05 1.04 + 0.05

มวลต่อความยาว Nominal mass per length kg/km 186 119 112 76 60 48

ความต้านแรงดึงสูงสุด Minimum breaking strength kN 29.581 19.613 17.748 13.078 10.983 8.140
kgf 3,016 2,000 1,810 1,333 1,120 830

ความยืด Minimum elongation % 4 4 4 4 4 4

ความติดแน่นของสังกะสี Adherence test turns/mm. 2/3D 2/3D 2/3D 2/3D 2/3D 2/3D

สภาพดึงยืดได้ Ductility turns/mm. 2/3D 2/3D 2/3D 2/3D 2/3D 2/3D

ระยะช่วงเกลียว Lay ratio - 14-22 16 14-22 16 16 16

IV

IV

IV
IV

มวลสังกะสี Minimum weight of zinc - coating g/m.2 198 153 198 122 122 122

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 Thai
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สำนักงาน 99/2 หมู 8 อาคารศูนยการคาเซียรรังสิต ชั้น 7 ถนนพหลโยธิน
ลำลูกกา ปทุมธานี 12130
โทร. 0 2992 6867 แฟกซ 0 2992 6870
ตูปณ 66 ปณฝ.คูคต 12130
โรงงาน 4 ถนน ไอ 5 นิคมอุตสาหกรรมมาบตาพุด อ.เมือง จ.ระยอง 21150
โทร. 0 3868 4610-3 แฟกซ 0 3868 4614
OFFICE 99/2 Moo 8 Zeer Stress Building 7 th Fl., Phahonyothin Rd.,
Lamlookka Pathumthani 12130 Thailand.
Tel. +66 2992 6867 Fax. +66 2992 6870
FACTORY 4 - I5 Rd., Maptaphud Industrial Estate, Maptaphud,
Muang Rayong 21150 Thailand.
Tel. +66 3868 4610-3 Fax. +66 3868 4614
WEBSITE www.thaiwireproducts.co.th