ASTM A312 TP321H Stainless Polished Steel Pipe
Material：Stainless Steel
Surface Treatment：Polished
Section Shape：Round
Od：1/8"-20"
Delivery Condition：Solution Annealed and Pickled
Transport Package：External Black Painting, Both Side with End Caps
Specification：6MM-505MM
ASTM A312 TP321H Stainless Polished Steel Pipe Introduction
ASTM A312 TP321H polished stainless steel pipe is a titanium stabilized austenitic stainless steel pipe, which has been mechanically polished or electrolytically polished to a surface finish of Ra≤0.4μm. It has high cleanliness and corrosion resistance and is widely used in food, pharmaceutical, semiconductor and high temperature industries.
ASTM A312 TP321H Stainless Steel Electropolished Pipe
Advantages of STM A312 TP321H Clean pipe
ASTM A312 TP321H titanium stabilized high temperature stainless steel pipe (UNS S32109/DIN 1.4541) is a high carbon version of 18Cr-8Ni austenitic steel. The titanium element inhibits the precipitation of carbides, significantly improving the resistance to intergranular corrosion and high temperature performance (temperature resistance up to 870℃).
ASTM A312 TP321H stainless steel polished steel pipe has high strength and can withstand greater pressure and weight. At the same time, it is easy to process, cut, weld and bend, and can be made into pipes of various shapes and sizes, suitable for various complex application scenarios.
Why Choose GNEE
GNEE specializes in the production of seamless/welded (ERW/EFW) TP321H pipes, covering a variety of specifications such as round and square, supporting processes such as electric fusion welding and cold drawing to ensure dimensional accuracy and high strength. As a DIN 1.4878 certified supplier, the products comply with ASME BPVC standards, providing customized solutions and global logistics support.
ASTM A312 TP 321 Ultra-clean precision steel pipe Specifications
| Standard | ASTM A312 / ASME SA312 (Seamless), ASTM A358 (Welded) |
| Grade | TP321H (UNS S32109) |
| Chemical Composition | - C: 0.04-0.10%, Cr: 17-19%, Ni: 9-12%, Ti: ≥5×C%, Mn≤2.0%, Si≤1.0% |
| Mechanical Properties | - Yield Strength: ≥205 MPa (at room temp) |
| - Tensile Strength: ≥515 MPa | |
| - Elongation: ≥30% | |
| Dimensions | - OD: 6.03 mm to 610 mm (0.237" to 24") |
| - Wall Thickness: 0.5 mm to 25 mm (Schedule 5S to XXH) | |
| Surface Finish | - Polished: Ra≤0.4μm (mechanical/electrolytic polishing) |
| Form | Round, Square, Rectangular, Hydraulic |
| End Finish | Plain End, Beveled End, Threaded |
| Heat Treatment | Solution annealed (1010-1120℃) + rapid cooling |
| Certifications | ASME BPVC, ISO 9001, FDA, 3A, EN 10204 3.1/3.2 |
UNS S32100 Seamless Pipe supplier
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Packaging of ASTM A312 TP321H annealed tube
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