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Help CenterCertified Alloy 31 Seamless Tubes From Trusted Corrosion Resistant Alloy Factory
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Certified Seamless Tubes for Demanding Industrial Applications
Alloy 31 seamless tubes are manufactured to meet strict international standards for corrosion resistance and durability. They are widely applied in desalination plants, chemical processing systems, and offshore engineering operations.
Key Specifications (Nickel Alloy / Hastelloy)
Parameter |
Specification / Range |
Remarks |
Standards |
ASTM B575, B622, B619, B626, ASME SB |
Others on request |
Grades |
C-276, C-22, B-3, G-30, Alloy 59, 625, 825 |
Hastelloy / Inconel series |
Product Forms |
Plate, Sheet, Pipe, Tube, Bar, Fitting, Flange, Wire |
– |
Size Range (Plate) |
Thk: 0.5–80mm; Width: 1000–3000mm |
Custom sizes |
Size Range (Pipe/Tube) |
OD: 6–610mm; WT: 0.5–40mm |
Seamless / welded |
Density |
8.44–9.22 g/cm³ |
Varies by grade |
Tensile Strength |
≥586–760 MPa (varies by grade) |
Annealed condition |
Yield Strength (Rp0.2) |
≥241–350 MPa |
– |
Elongation |
≥30–45% |
– |
Hardness |
≤95 HRB / ≤25 HRC typical |
– |
Testing |
PMI, Tensile, Hardness, UT, ECT, Intergranular corrosion |
Mill cert + optional 3rd party |
Packaging |
Wooden case / pallet, waterproof, end capped (tubes) |
Seaworthy, ISPM 15 |
Q1：Do you offer sample orders？
A：Yes, samples are available for quality evaluation. Sample cost is charged but refundable upon bulk order.
Q2：What is your MOQ？
A：Our standard MOQ is 100 kg per specification. For common grades and standard sizes, we accept small batch orders. Mixed orders for different products are also welcome.
Q3：Can you provide custom sizes？
A：Yes, we can produce any length, width, thickness, or diameter based on your drawings. Cutting, slitting, and other processing services are available with tolerance as required.
Q4：What certifications do you provide？
A：Each shipment comes with EN 10204 3.1 mill test certificate (MTC). Third-party inspection reports (SGS/BV/TÜV) can be arranged upon request.
Q5：What is your lead time？
A：7–15 working days for stock items. 20–30 days for custom orders, depending on quantity and specification.
Q6：What surface treatments are available？
A：Various surface treatments are available upon request, including pickled, polished, coated, oiled, or as required.
Q7：What payment terms do you accept？
A：T/T (30% deposit + 70% against BL copy), L/C at sight, Western Union, etc.
Q8：What about packaging for export？
A：Standard seaworthy packaging with waterproof protection, steel straps, corner protectors, and ISPM 15 fumigation certification. Custom packaging is available as required.
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