we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
ASME SA312/SA312M covers seamless and straight-seam welded austenitic pipe intended for high temperature and general corrosive service. Steel pipe of ASME SA312/SA312Mshould be marked with the following info: Pipe size, wall thickness, specification, grade, seamless or welded, heat number, etc. Welded pipe of ASME SA312/SA312M should not use filler metal in automatic welding, large diameter pipe may have 2 longitudinal welds, pipe can be hot finished or cold finished.
Grade:TP347H,TP347,TP321,TP317L and so on.
Standard: ASTM A312, A312M ASME SA312 / SA312M
Material/Steel Grade: TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Application: Seamless Austenitic Stainless Steel Pipes
Size: OD: 1/4″~20″ WT: SCH5S~SCH80S
Finish: Mill
WT Tolerance %
|
NPS |
ASME SA312 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 |
Chemical Composition (%, max)
|
Steel Grade |
C |
Si |
Mn |
Cr |
Ni |
Mo |
S |
P |
|
TP304 |
0,08 |
0,75 |
2 |
18 – 20 |
8 – 11 |
– |
0,03 |
0,04 |
|
TP304L |
0,035 |
0,75 |
2 |
18 – 20 |
8 – 13 |
– |
0,03 |
0,04 |
|
TP316 |
0,08 |
0,75 |
2 |
16 – 18 |
11 – 14 |
2 – 3 |
0,03 |
0,04 |
|
TP316L |
0,035 |
0,75 |
2 |
16 – 18 |
10 – 15 |
2 – 3 |
0,03 |
0,04 |
|
TP321 |
0,08 |
0,75 |
2 |
17 – 20 |
9 – 13 |
– |
0,03 |
0,04 |
Mechanical Properties
|
Steel Grade |
Tensile Strength, N/mm2 (min) |
Yield Strength, N/mm2 (min) |
Elongation, % (min) |
|
TP304 |
515 |
205 |
35 |
|
TP304L |
485 |
170 |
35 |
|
TP316 |
515 |
205 |
35 |
|
TP316L |
485 |
170 |
35 |
|
TP321 |
OD < 17,1 mm – 515; |
OD < 17,1 mm – 205; |
35 |
Equivalent steel grade
|
ASME SA312/SA312M |
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 |
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