ASTM A312 covers seamless, straight-seam welded, and heavily cold-worked welded stainless steel pipe, when larger diameter welded pipes, welding two longitudinal sections are allowed.
ASTM A312 TP304L seamless stainless steel pipe is manufactured according to the ASTM A312 standard. It is made from a specific grade of austenitic stainless steel (304L) and is formed by extrusion without welds. The low carbon content of 304L (≤0.03%) reduces chromium carbide precipitation and enhances resistance to intergranular corrosion, especially in welded or high-temperature applications.
ASTM A312 TP304L stainless steel pipe is a low-carbon austenitic steel that offers good corrosion resistance, product contamination prevention, oxidation resistance, excellent formability, high strength, low weight, and good strength and toughness at low temperatures.

ASTM A312 TP304L stainless steel pipe Specification:
| Specification | ASTM A312 / ASME SA312 |
| Outside Diameter | 1/2" To 48" |
| Schedule | SCH 5 To SCH XXS |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Ends | Plain End, Beveled End, Threaded |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| Length | 6M Or As Custom, Single Random, Double Random , Standard & Cut length |
Equivalent Grades:
| GRADE | EN | UNS | JIS | AFNOR | BS | WERKSTOFF NR. | GOST | SS |
| SS 304L |
X2CrNi18-9 / X2CrNi19-11
| S30403 | SUS 304L | Z3CN18‐10 | 304S11 | 1.4306/1.4307 | 03Х18Н11 | 2332 |
Chemical Composition:
| Grade | Si | C | Mn | Cr | P | S | Ni | |
| TP304L | min. | - | - | - | 18 | - | - | 8 |
| max. | 1 | 0.03 | 2 | 20 | 0.045 | 0.03 | 12 | |
Mechanical Properties:
| Tensile Strength, min. MPa [ksi] | 485 Mpa - 70 Ksi |
| Yield Strength, min. MPa [ksi] | 170 Mpa - 25 Ksi |
| Elongation, min, (% in 50mm) | 40% |
Applications:
Power Generation
Petrochemicals
Gas Processing
Pharmaceuticals
Chemical Equipments
Sea Water Equipments
Heat Exchangers&Condensers
Pulp and Paper Industries
If you have a project need for ASTM A312 TP304L stainless steel bright annealed pipe, please feel free to place an order. GNEE maintains a large inventory of popular products for you to choose from. We offer a variety of practical product forms, including seamless and welded. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.
We offer ASTM A312 TP304L stainless steel pipe in a wide range of sizes, with outside diameters ranging from 1/8″ to 24″. We offer pipe schedules of SCH 5s, SCH 10s, SCH 40s, and SCH 80s for wall thickness, and sizes that conform to ANSI B36.10 and ANSI B36.19. 304 pipe ends can be plain or beveled, and ASME SA312 pipes are finished in annealed and pickled conditions.


