ASTM A312 Stainless Steel Pipes

covers seamless and straight-seam welded austenitic pipe intended for high temperature and general corrosive service. Steel pipe of should be marked with the following info: Pipe size, wall thickness, specification, grade, seamless or welded, heat number, etc. Welded pipe of should not use filler metal in automatic welding, large diameter pipe may have 2 longitudinal welds, pipe can be hot finished or cold finished. ANSON is an experienced boiler and pressure steel tube supplier which can offer you steel pipe of all grade and dimension range.

ASTM A312 has 4 main grades /304L, TP316/316L. and TP347 are included in ASME pressure vessel code and the Chemical Plant and Refinery Piping Code, These steel tubes are safe to be used in temperatures as low as −425 °F [−250 °C] without impact tests qualification.

OD: 10.3mm-609.6mm
WT: 0.2mm-60mm
Length: 5-12m or as you required

Application: Low pressure line pipe for liquid, water, gas, oil, pipe for boiler project, etc.
Supplementary Technology: Plain or threaded with socket or beveled with plastic caps, hydraulic testing, eddy current, Infrared test.
Surface: Bright annealed, pickled, blasted or passivated.
Delivery State: Hot Rolled, Cold Drawn
Steel Grade: TP304, TP304L, TP316, TP316L, , TP347

ASTM A312 Chemical Composition:
Steel Grade ASTM A312  Chemical Composition % Max
C Mn P S Si Cr Ni Mo N B Nb Ti
TP304 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 … .
TP304H 0.04-0.10 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0
TP304L 0.035 D 2.00 0.045 0.030 1.00 18.0-20.0 8.0-13.0
TP310S 0.08 2.00 0.045 0.030 1.00 24.0-26.0 19.0-22.0 0.75
TP316 0.08 2.00 0.045 0.030 1.00 16.0-18.0 11.0-14.0 2.00-3.00
TP316L 0.035 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 2.00-3.00
TP316H 0.04-0.10 2.00 0.045 0.030 1.00 16.0-18.0 11.0-14.0 2.00-3.00
TP316Ti 0.08 2.00 0.045 0.030 0.75 16.0-18.0 10.0-14.0 2.00-3.00 0.10 5x(C+N)-0.70
TP321 0.08 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 0.10 5C-0.70
0.04-0.10 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 4C-0.60
TP347 0.08 2.00 0.045 0.030 1.00 17.0-19.0 9.0-13.0 10xC-1.00
TP347H 0.04-0.10 2.00 0.045 0.030 1.00 17.0-19.0 9.0-13.0 8xC-1.00
ASTM A312 Mechanical Property:
ASTM A312  Mechanical Properties
Steel Grade Heat
Treatment
Temperure
Min.
º F(º C)
Tensile Strength
Ksi (MPa), Min.
Yield Strength
Ksi (MPa), Min.
Elongation %, Min
TP304 Solution 1900 (1040) 75(515) 30(205) 35
TP304L Solution 1900 (1040) 70(485) 25(170) 35
TP304H Solution 1900 (1040) 75(515) 30(205) 35
TP310S Solution 1900 (1040) 75(515) 30(205) 35
TP316 Solution 1900(1040) 75(515) 30(205) 35
TP316L Solution 1900(1040) 70(485) 25(170) 35
TP316H Solution 1900(1040) 75(515) 30(205) 35
TP316Ti Solution 1900(1040) 75(515) 30(205) 35
TP321 Solution 1900(1040) 75(515) 30(205) 35
TP321H Solution Cold: 2000(1100)
Hot: 1925(1050)
75(515) 30(205) 35
TP347 Solution 1900(1040) 75(515) 30(205) 35
TP347H Solution Cold: 2000(1100)
Hot: 1925(1050)
75(515) 30(205)
ASTM A312 Equivalent steel grade:
ASTM A312 JIS G3459 DIN 17440 BS NF
TP304 SUS 304 TP X5CrNi 18 9 304S18 A 49-230
TP304H SUS 304 HTP 304S59 A 49-214
TP310 304 LTP X2 CrNi 19 9 304S14 A 49-230
TP316 SUS 304L TP
TP316H 310STP X5 CrNiMo 18 10 316S18 A 35-573
TP316L SUS 316 TP 316S59 A 49-230
TP321 SUS 316 LTP X2 CrNiMo 18 10 316S14 A 49-230
TP347 316 HTP x10 CrNiTi 18 9 321S18 A 49-230
TP347H SUS 316 LTP X5 CrNiNb 18 9 347S18 A 35-573

We also offer steel fabrication service where steel plates can go through processings like cutting, welding, bending, machining, pre-coating, pre-lined, beveling, or as you require. Our steel mills have fabricating employees that have 5-10 years of working experience. If you are interested in buying ASTM A312 steel tube products, contact us now for the latest price or check the following table for equivalent steel grade of ASTM A312.

Nominal wall thickness for ASTM A312(Seamless and straight seame welded steel pipes)
NPS ASTM A312  WT Tolerance, %
+
1/8-2 1 /2 20.0 12.5
3~18, t/D≤ 5% 22.5 12.5
3~18, t/D> 5% 15.0 12.5
≥ 20, welded 17.5 12.5
≥ 20, seamless, t/D≤ 5% 22.5 12.5
≥ 20, seamless, t/D> 5% 15.0 12.5
ASTM A312 Stainless Steel Pipes OD Tolerance
NPS ASTM A312  OD Tolerance
+
inch mm inch mm
1/8~1 1 /2
> 1 1 /2~4
> 4~8
> 8~18
> 18~26
> 26~34
> 34~48
1/64(0.015)
1/32(0.031)
1/16(0.062)
3/32(0.093)
1/8(0.125)
5/32(0.156)
3/16(0.187)
0.4
0.8
1.6
2.4
3.2
4.0
4.8
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
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