ASME SA312 TP321 Stainless steel welded pipes supplier
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We produce and export ASME SA312 TP321 stainless steel welded pipes. ASME SA312 TP 321 Thickness wall stainless steel welded tubes manufacturer in China.
SA312 TP321 Welded pipe Specification: ASME SA312 specification covers seamless pipe and welded pipe for austenitic stainless steel. These high performance austenitic stainless steels have a fully austenitic microstructure in the quench annealed condition.
We supply high quality ASME SA312 Seamless Pipe and ASME SA312 Stainless Steel Welded Pipe that is sized, cut, and finished according to your exact specifications,304 pipe and tubing is available with ODs from 12.7MM to 2500MM? with wall thickness from 0.8MM to 60MM. We supply ASME SA312 TP 316 pipes after all quality parameters checks by experienced and good knowledge staff. We stocks a wide range of industry standard sizes of ASME SA312 Seamless Stainless Steel Pipes.
Stainless TP321 welded pipe production range: ASME SA312 pipe dimensions
OD12.7 to 2500mm, Thick:0.8mm-60mm, Length 500mm to 13000mm
Adopt standard: ASME SA312, ASME SSA312, ASME A213, ASME SA213 and others.
SA312 TP321 Welded pipe Chemical Composition
| Grade |
UNS
Design |
Composition, % |
| C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mb |
Ti |
Nb |
N |
Cu |
Ce |
B |
Al |
| TP321 |
S32100 |
0.08 |
2 |
0.045 |
0.03 |
1 |
17.0–19 |
9.0–12 |
. . . |
Ti 5 × (C+N) min, 0.70 max |
. . . |
0.1 |
. . . |
. . . |
|
|
| TP321H |
S32109 |
0.04 – 0.1 |
2 |
0.045 |
0.03 |
1 |
17.0–19 |
9.0–12 |
. . . |
4(C+N) min; 0.70 max |
. . . |
0.1 |
. . . |
. . . |
|
|
| TP321H |
S32654 |
0.02 |
2.0-4 |
0.03 |
0.005 |
0.5 |
24.0–25 |
21.0–23 |
7.0-8 |
. . . |
. . . |
0.45- 0.55 |
0.30-0.6 |
. . . |
|
|
| TP321H |
S33228 |
0.04 – 0.08 |
1 |
0.02 |
0.015 |
0.3 |
26.0–28 |
31.0–33 |
. . . |
. . . |
0.60- 1 |
. . . |
. . . |
0.05 – 0.1 |
|
0.025 |
| TP321H |
S34565 |
0.03 |
5.0-7 |
0.03 |
0.01 |
1 |
23.0–25 |
16.0–18 |
4.0-5 |
. . . |
0.1 |
0.40- 0.6 |
. . . |
. . . |
|
|
SA312 TP321 Welded pipe Tensile Requirements
| Grade |
UNS
Designation |
Tensile Strength, Min. ksi [MPa] |
Yield strength, min ksi [MPa] |
other |
| TP321 |
S31600 |
75 [515] |
30 [205] |
|
| TP321L |
S31603 |
70 [485] |
25 [170] |
|
| TP321H |
S31609 |
75 [515] |
30 [205] |
|
|
S31635 |
75 [515] |
30 [205] |
|
SA312 TP321 Welded pipe Heat Treatment Requirements
| Grade |
UNS
Designation |
Finished |
Heating Temperature |
Cooling/testing Requirements |
| TP321 |
S31609 |
Cold |
1900 °F [1040 °C] |
See Spec |
| TP321 |
S31610 |
Hot |
1900 °F [1040 °C] |
See Spec |
| TP321H |
S32109, S32615 |
Cold |
2000 °F [1100 °C] |
See Spec |
| TP321H |
S32109, S32615 |
Hot |
1925 °F [1050 °C] |
See Spec |
| TP321H |
S32654 |
|
2100 °F [1150 °C] |
See Spec |
| TP321H |
S33228 |
|
2050—2160 °F [1120—1180 °C] |
See Spec |
| TP321H |
S34565 |
|
2050—2140 °F [1120—1170 °C] |
See Spec |
SA312 TP321 Welded pipe Elongation Requirements
| Elongation in 2 in., min, % |
longitudinal |
Transverse |
Grain size |
| Longitudinal |
Transverse |
| 35 |
25 |
35 |
25 |
According to standard |
Our TP321 Stainless Steel Welded pipe manufactured from cold-forming process using coils of steel sheet with automated spiral welds. Great strides were made in quality control, testing, joints and protective coatings. Welded steel pipe is available in wide ranges of sizes and properties of the steel. These ERW Pipes carry high strength, ease of installation, high flow capacity, leak resistance, long service life, reliability and versatility, and economy.
SA312 TP321 Welded pipe ship marking:
Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer’s private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304N, TP321H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.
Referenced Documents:
ASME Referenced Standards
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A999 A999M Specification for General Requirements for Alloy and Stainless-Steel Pipe
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless-Steel Tubes
E112 Test Methods for Determining Average Grain Size
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
For us quality always stands first, and we would provide 100% free replacement to our customer. At the same time, we also strive to ensure that our quality for cold drawn stainless steel pipes and tubes is the best in the industry. Our continuous focus on quality, price and service has helped us win many order from India, and overseas. We welcome you to contact us for best prices for ASME SA312 stainless steel pipes and tubes from our factory
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