ASTM A312 TP304H Pickled Seamless Round Pipe
Sep 28, 2025
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GNEE is a recognized manufacturer, supplier, distributor, and exporter of stainless steel 304H pipes. We specialize in supplying ASTM A312 TP304H seamless pipes complete with mill test certificates (EN 10204 3.1/3.2 TC).
The 304H stainless pipes undergo lubrication treatment, followed by cold rolling or cold drawing and degreasing. The pipes are then heat treated, straightened, and re-pickled. They are cut to standard lengths and can also be customized according to customer requirements.
We focus on providing various specifications of SS 304H pipes for industries such as oil and gas, petrochemical, pharmaceutical, food processing, and chemical engineering. We maintain a large inventory of SS 304H round pipes and offer high-quality 304H welded pipes at the lowest prices in China.
Standard Specification For ASTM A312 / ASME SA312 SS 304H Seamless Pipes
| Specification | ASTM A312 / ASME SA312 |
| Standard | ASTM, ASME and API |
| Size | 1 / 8" NB - 24" NB |
| Types | Seamless - Hot Rolled / Cold Drawn |
| Length | Single Random, Double Random & Required Length |
| Outer Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB |
| Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Types | Seamless / Cold Drawn / Hot Finish / Cold Finish |
| Form | Round Pipes, Square Pipes, Rectangular Pipe, Hot Finish Pipe, Cold Drawn pipe, |
| End | Plain End, Beveled End, Treaded |
Equivalent Grade of Stainless Steel 304H pipe
| EU EN |
USA - |
Japan JIS |
France AFNOR |
GOST | Inter ISO |
| X6CrNi18-10 (1.4948) |
304H S30409 |
SUS304H | Z6CN18-09 | 08KH18N10 | X7CrNi18-9 |
| Grade | UNS Designation | Composition, % | ||||||
| Carbon | Manganese | Phosphorus, max | Sulfur, max | Silicon | Chromium | Nickel | ||
| 304H | S30409 | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 18-20 | 8-10.5 |
Stainless Steel ASTM A312 TP 304H Yield Strength
| SS Pipes Grade | Tensile Strength, N/mm2 (min) | Yield Strength, N/mm2 (min) | Elongation, % (min) |
| TP304H | 515 | 205 | 35 |
Applications
High-Temperature Applications: A312 TP304H stainless steel seamless pipes are used in high-temperature environments such as in the manufacturing of boilers, heat exchangers, and superheaters.
Oil and Gas Industry: These pipes are utilized in the oil and gas industry for transporting fluids and gases under high pressure and temperature conditions.
Chemical Processing: A312 TP304H seamless pipes are suitable for chemical processing plants where corrosion resistance and high-temperature strength are essential.
We rigorously test our pipes using the latest and most effective technologies, and our experts perform dimensional inspections. We also perform eddy current and ultrasonic testing to verify the quality of the pipes. The pipes are packaged, marked with the relevant details, and delivered to their destination.
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