UNS S44400 444 Ferritic Seamless Tube 19mm 25mm 38mm ASTM A268 Heat Exchanger Grade
Product Spotlights
Product Description:
Stainless Steel Pipe & Tube – Seamless and Welded for Reliable Performance
Our stainless steel pipes and tubes are manufactured to meet international standards including ASTM A312, A554, A269, EN 10216-5, JIS G3459, and GB/T 14976. Available in grades 304, 304L, 316L, 310S, 904L, 2205, 2507, and more.
We offer both seamless (OD 6–530mm, wall thickness 0.5–40mm) and welded (OD 10–2500mm, wall thickness 0.5–25mm) options. Lengths can be customized up to 12 meters, with standard or random lengths also available.
Surface conditions include pickled, annealed, bright annealed, or polished as required. Typical applications cover chemical processing, oil & gas, food & beverage, pharmaceutical, marine engineering, and heat exchanger systems.
Every shipment comes with EN 10204 3.1 mill test certificate. Third-party inspection (SGS/BV/TÜV) is available upon request. We support low MOQ (100 kg per specification), sample orders, and fast delivery.
Key Product Parameters – Stainless Steel Pipe & Tube
Parameter |
Specification / Range |
Remarks |
Standards |
ASTM A312, A213, A269, A554, EN 10216-5, JIS G3459, GB/T 14976 |
Other standards on request |
Type |
Seamless / Welded (ERW, EFW, laser) |
– |
Grades |
304, 304L, 316, 316L, 321, 310S, 904L, 2205, 2507 |
Duplex & super austenitic available |
OD Range |
Seamless: 6 – 610 mm; Welded: 6 – 2500 mm |
Custom on request |
Wall Thickness |
0.5 – 40 mm (seamless); 0.5 – 25 mm (welded) |
Sch5S, Sch10S, Sch40S, Sch80S |
Length |
3m / 6m / 12m fixed, or custom cut |
Coiled tube available for small OD |
Surface Finish |
Pickled & Annealed, Bright Annealed, Polished (mirror/satin/hairline) |
– |
End Finish |
Plain, beveled, threaded, grooved |
Plastic caps included |
Tolerances (OD/Wall) |
OD: ±0.05~0.5 mm; Wall: ±0.10~0.20 mm (welded) |
Per ASTM A530 |
Testing |
Hydrostatic, Eddy Current, PMI, Tensile |
100% ECT for welded tube |
Marking |
Grade, OD, wall, heat No., standard |
Laser or stencil |
Packaging |
Bundled with end caps, steel strapped, wooden case / pallet |
ISPM 15 fumigated wood |
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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