4 Tubing, Tubing Tools, and Welding System
Ordering Information, Dimensions, and Pressure Ratings
FITTINGS
TUBE
Metric Sizes Imperial Sizes
Allowable working pressures are based on equations from Allowable working pressures are calculated from an S value
ASME B31.3 and ASME B31.1 for EN ISO 1127 tubing (D4, of 20 000 psi (137.8 MPa) for ASTM A269 tubing at –20 to
T4 tolerance for 3 to 12 mm; D4, T3 tolerance 14 to 50 mm), 100°F (–28 to 37°C), as listed in ASME B31.3 and ASME B31.1.
PIPE, WELD,
VCR, VCO
FITTINGS
using a stress value of 137.8 MPa (20 000 psi) and tensile Tubing nominal length is 6 m.
strength of 516.4 MPa (74 900 psi).
Tube Tube Working
Tubing nominal length is 6 m. OD Wall Ordering Weight Pressure
in. in. Number kg/m psig
STANDARD
Tube Tube Working
TUBING
OD Wall Ordering Weight Pressure 0.014 SS-T1-S-014-6ME 0.01 8 100
mm mm Number kg/m bar 1/16
0.020 SS-T1-S-020-6ME 0.01 12 000
0.5➀ SS-T3M-S-0,5M-6ME 0.021 330
3 0.028 SS-T2-S-028-6ME 0.04 8 500
0.7➀ SS-T3M-S-0,7M-6ME 0.027 560 1/8
0.035 SS-T2-S-035-6ME 0.05 10 900
FLEXIBLE
TUBING
HOSE /
1.0 SS-T6M-S-1,0M-6ME 0.125 420
6 0.035 SS-T4-S-035-6ME 0.12 5 100
1.5 SS-T6M-S-1,5M-6ME 0.169 710
1/4 0.049 SS-T4-S-049-6ME 0.16 7 500
1.0 SS-T8M-S-1,0M-6ME 0.175 310
8 0.065 SS-T4-S-065-6ME 0.19 10 200
1.5 SS-T8M-S-1,5M-6ME 0.244 520
BALL & PLUG
0.035 SS-T6-S-035-6ME 0.19 3 300
VALVES
1.0 SS-T10M-S-1,0M-6ME 0.225 240
10 3/8 0.049 SS-T6-S-049-6ME 0.25 4 800
1.5 SS-T10M-S-1,5M-6ME 0.319 400
0.065 SS-T6-S-065-6ME 0.32 6 500
1.0 SS-T12M-S-1,0M-6ME 0.275 200
0.035➀ SS-T8-S-035-6ME 0.26 2 600
12 1.5 SS-T12M-S-1,5M-6ME 0.394 330
DIAPHRAGM
BELLOWS,
0.049 SS-T8-S-049-6ME 0.35 3 700
VALVES
2.0 SS-T12M-S-2,0M-6ME 0.500 470 1/2
0.065 SS-T8-S-065-6ME 0.45 5 100
1.0➀ SS-T16M-S-1,0M-6ME 0.375 140
0.083 SS-T8-S-083-6ME 0.55 6 700
16 1.5 SS-T16M-S-1,5M-6ME 0.507 230
0.049➀ SS-T10-S-049-6ME 0.45 2 900
CHECK & RELIEF
2.0 SS-T16M-S-2,0M-6ME 0.651 330 5/8
VALVES
0.065 SS-T10-S-065-6ME 0.58 4 000
1.0➀ SS-T18M-S-1,0M-6ME 0.425 120
0.049➀ SS-T12-S-049-6ME 0.56 2 400
18 1.5 SS-T18M-S-1,5M-6ME 0.619 200 3/4
0.065 SS-T12-S-065-6ME 0.71 3 300
2.0 SS-T18M-S-2,0M-6ME 0.801 290
1 0.083 SS-T16-S-083-6ME 1.2 3 100
METERING
NEEDLE &
20 2.0 SS-T20M-S-2,0M-6ME 0.901 260
VALVES
➀ Not recommended for use with Swagelok tube fittings in gas service.
22 2.0 SS-T22M-S-2,0M-6ME 1.00 230
2.0➁ SS-T25M-S-2,0M-6ME 1.15 200
25
2.5 SS-T25M-S-2,5M-6ME 1.41 260
INSTRUMENT
MANIFOLD
SYSTEMS
➀ Not recommended for use with Swagelok tube fittings.
➁ Not recommended for use with Swagelok tube fittings in gas service.
MODULAR
SYSTEMD
Pressure Ratings at Elevated Temperatures
To determine elevated-temperature pressure ratings in Example:
accordance with B31.3 and B31.1, multiply the pressure ratings Type 316 stainless steel 1/2 in. OD × 0.035 in. wall at 1000°F
provided in the tables above by the factors in the table below.
REGULATORS
& FILTERS
1. The allowable working pressure at –20 to 100°F (–28 to
Temperature Material 37°C) is 2600 psig (Fractional Sizes, page 3).
304, 316, 2. The elevated temperature factor for 1000°F (537°C) is
°F °C 304 / 304L 316 / 316L 0.76:
MEASUREMENT
200 93 1.00 1.00 2600 psig × 0.76 = 1976 psig
DEVICES
400 204 0.93 0.96 The allowable working pressure for 316 SS 1/2 in. OD ×
600 315 0.82 0.85 0.035 in. wall tubing at 1000°F (537°C) is 1976 psig.
800 426 0.76 0.79
MEDIUM- HIGH-
PRESSURE
1000 537 0.69 0.76
Dual-certified grades 304 / 304L and 316 / 316L
meet the requirements for the lower maximum
carbon content of the L grades and for the higher
minimum yield and tensile strength of the non-L
grades.
REFERENCES
