ASTM A358 TP321 stainless steel pipe is a high alloy stainless steel welded steel pipe designed for use in high temperature and corrosive environments.
The production process of ASTM A358 TP321 Grade 1 stainless steel pipe usually includes steps such as steel plate preparation, forming, welding, heat treatment, testing and surface treatment. Grade 1 usually means that the steel pipe needs to be double-sided welded and undergo comprehensive radiographic testing or other non-destructive testing to ensure the quality of the weld.
ASTM A358 TP321 EFW pipe is often used to manufacture pipelines, valves, petrochemical equipment, etc. during the extraction, transportation and storage of oil and gas.
Products Data
ASTM A358 Grade 321 Stainless Steel EFW Pipes Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 321 | min. max |
- 0.08 |
2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 12.0 |
0.10 | Ti=5(C+N) 0.70 |
321 Stainless Steel Pipes Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
ASTM A358 SS 321 EFW Pipe Tolerances
| NPS Designator | Permissible Variations in Outside Diameter | |
|---|---|---|
| Over In. | Under In. | |
| 1/8 to 1-1/2, incl | 1/64 (0.015) | 1/32 (0.031) |
| Over 1-1/2 to 4, incl | 1/32 (0.031) | 1/32 (0.031) |
Products display
ASTM A358 TP 321 EFW Stainless Steel Pipe
Why Choose GNEE
1.SGS and ISO9001 certified.
2.Extra long time industry experience
3.Management system - in-house software
4.Finished goods inventory-over 450 tonnes.
5.Raw material inventory-over 700 tonnes.
We have stable supply, fast delivery and responsible after-sales service, so our products are widely praised.sales@gneetube.com
GNEE CUSTOMER VISIT
GNEE FACTORY ENVIRONMENT
GNEE PACKAGING AND SHIPPING
FAQ
Q. What are your company's main products?
A: Our main products are stainless steel round tubes/square tubes, etc.
Q. What are your company's advantages?
A: We have many professionals, technicians, more competitive prices than other stainless steel companies, and better after-sales service.
Hot Tags: astm a358 tp321 class1 welded pipe, China astm a358 tp321 class1 welded pipe manufacturers, suppliers, factory, 446 stainless steel pipe, Stainless steel 446 pipe, SS DIN 1 4550 Cold Rolled Coiled Tubes, UNS S31008 Stainless Steel Hot Rolled Pipes, STS 480 thermal insulation steel pipe, 1 4541 stainless steel pipe
