321 Stainless Steel Welded Pipe

321 Stainless Steel Welded Pipe
321 Stainless Steel Welded Pipe is designed for applications involving elevated temperatures and repeated thermal cycling. Stabilized with titanium, it offers excellent resistance to intergranular corrosion after welding, making it a better choice than standard austenitic stainless steel in high-temperature environments. It also provides good oxidation resistance, reliable mechanical strength, and excellent fabrication performance. Widely used in heat exchangers, exhaust systems, boilers, pressure piping, and chemical processing equipment, it delivers long-term durability and dependable performance. We supply high-quality 321 stainless steel welded pipes with precise dimensions, consistent quality, competitive pricing, and customized solutions for global customers.
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◉ Product Description

Product name321 Stainless Steel Welded Pipe
 SizeOD: 3-2500 mm
WT: 1.0-150 mm
LENGTH: 5.8/6/11.8/12m
 Pipe StandardASTM A213, ASTM A312, ASTM A269, ASTM A778, ASTM A789
DIN 17456,DIN 17457,DIN
EN 10216, BS 3605, JIS 3459, JIS3463, GOS T9941
 Material304/L,316/L,201,202,301,347/H,316Ti,309s,310s
ProcessCold drawn, Cold rolled, Precision Rolled
FinishAnnealed & pickled, bright annealing, polished


◉ Product Display

Product NameStainless Steel Welded Pipe
StandardISO, ASTM, EN, JIS, GB, DIN, BS, AISI, SAE, API
Material Grade200 Series: 201,202
300 Series: 301, 302, 303, 304, 304L, 309, 309S, 310, 310s, 316, 316L, 316Ti, 317L, 321, 347, 347H
400 Series: 409, 409L, 410, 410S, 420, 430, 431, 434, 439, 440, 441, 444
Duplex Steel: UNS S22053, S22253, S31500, S31803, S32205, S32304, S32900
Outer DiameterSeamless Pipe: 4mm-812.80mm
Welded Pipe: single slit(Φ8mm-Φ630mm); girth(Φ630mm-Φ3000mm),
ThicknessSeamless Pipe: 0.5mm - 60mm
Welded Pipe: single slit(0.5mm-25mm);girth(3mm-45mm)
Length5.8-6.1 m or as customers' request
ProcessSeamless: Cold Rolled, Cold drawn, Hot Rolled,
Welded: ERW,EFW,Spiral Welded
Section ShapeRound, Square, Rectangular, Oval, etc.
ToleranceAcording to the Standard.
Surface180G, 320G, 400G Satin / Hairline
400G, 500G, 600G or 800G Mirror finish
ColorGolden, Champagne gold, Rose gold, Brown, Bronze, Brass, Black, etc.
ApplicationCapillary Pipe, Hydraulic Pipe, Decorative Pipe, Heat Exchanger Tube, Exhaust Pipe, Food Grade Pipe, Furnace Pipe, Condenser Tube, Oil Line Pipe, Structural Pipe, Gas Pipe, Water Pipe

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