ASTM A312 321H Stainless Steel Pipes, Stainless Steel 321 /321H Pipes, Stainless Steel 321 Tubes Suppliers In India

Stainless Steel 321 Seamless / Welded Pipes, Stockholder, Supplier of Seamless 321H Seamless Tubes

UNS S32100 / UNS S32109 Stainless Steel Seamless Pipes, 1.4541/ 1.4878 SS Welded Tubes Supplier

Stainless Steel 321 Pipes and Stainless Steel 321H Tubes is a common austenitic 18/8 stainless steel alloy, with the addition of titanium, making it a good choice in high temperature environments of up to 900° C. These 321 Stainless Steel Pipes and 321H Stainless Steel Tubes has good welding and forming capabilities and is widely used in operating temperature environments in excess of 500° C.

SS 321H Pipes, commonly referred as UNS S32109, is the higher carbon version of the SS 321 Tubes, commonly referred as UNS S32100, to provide higher temperature strength. Also known as WNR 1.4541 Pipes and WNR 1.4878 Tubes, they are mainly used in manufacturing heat exchangers, pressure vessels, pharmaceutical and chemical processing equipments.

In addition to standard sizes, which are available in stock, our specialty is to manufacture and supply custom size of Stainless Steel 321 Pipes and Stainless Steel 321 Tubes from our factory.


Stainless Steel 321 / 321H Seamless Pipes & TubesStainless Steel 321 / 321H Seamless Pipes & Tubes
Stainless Steel 321 / 321H Welded Pipes & TubesStainless Steel 321 / 321H Welded Pipes & Tubes


Stainless Steel 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 Pipes, Tubes / Tubing

SS 321 S32100 1.4541
SS 321H S32109 1.4878

Production, Supply, Stock Range of Stainless Steel 321 / 321H Pipes and Stainless Steel 321 / 321H Tubes

Outside Diameter: 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock

Thickness Range: 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Type: Seamless / ERW / Welded / Fabricated / CDW

Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes

Length: Single Random, Double Random & Required Length

End: Plain End, Beveled End, Treaded

End Protection: Plastic Caps | Outside Finish: 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements

Delivery Condition: Annealed and Pickled, Polished, Bright Annealed, Cold Drawn

Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports

Packing: Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests

Specials: Sizes and Specifications other than above can be manufactured on request

Stainless Steel 321 / 321H, UNS S32100 / S32109, WNR 1.4541 / 1.4878 Pipes & Tubes Available Product Forms :

SS 321 / 321H Welded and Seamless Tubes, Pipes

SS 321 / 321H Coiled Tubing

SS 321 / 321H Hydraulic and Instrumentation Tubes

SS 321 / 321H Seam Welded and Cold Redrawn Pipe and Tubes

SS 321 / 321H Seam Welded, Cold Redrawn and Annealed Pipes and Tubes

SS 321 / 321H Capillary Tubes

Stainless Steel 321 / 321H Pipe Polishing

Stainless Steel 321 / 321H Pipes & Tubes Chemical Composition :


Grade C Mn Si P S Cr Ni Ti N
321 0.08 max. 2.00 max. 0.75 max. 0.045 max. 0.03 max. 17.0 – 19.0 9.0-12.0 5 x (C+N) min. 0.1
321H 0.04 – 0.10 2.00 max. 0.75 max. 0.045 max. 0.03 max. 17.0 – 19.0 9.0-12.0 5 x (C+N) min. 0.1

Stainless Steel 321 / 321H Pipes & Tubes Mechanical Properties :


Grade 321
Density 7.92
Melting Range,℃ 1398 - 1446
Elongation % 40
Tensile Strength (Mpa) 515
Yield Strength (Mpa) 205
Hardness (Brinell) 217

Stainless Steel 321 / 321H Pipes, Tube Stock and Supply Range


Sr. No. Product Description Outside Diamter, OD (in mm) Wall Thickness, WT (in mm)
1 Stainless Steel 321 / 321H Round Pipe/Tube 6mm – 630mm 0.5mm-30mm
2 Stainless Steel 321 / 321H Square Pipe/Tube 12.7mm* 12.7mm to 300mm* 300mm 0.5mm-30mm
3 Stainless Steel 321 / 321H Rectangular Pipe/Tube 10*20mm to 100*200mm 0.5mm-30mm
4 Stainless Steel 321 / 321H Colour Coated Pipe/Tube 6mm to 630mm 0.5mm-30mm
5 Stainless Steel 321 / 321H Ornamental Tubes 12.7mm to 76.2mm 0.5mm-2.0mm
6 Stainless Steel 321 / 321H Electropolished Pipes/Tubes 12.7mm to 250mm 0.5mm-30mm
7 Stainless Steel 321 / 321H Slot Round Pipe/Tube 12.7mm to 76.2mm 0.5mm-2.0mm
8 Stainless Steel 321 / 321H Triangle Tube 16mm to 85mm 0.5mm-3.0mm
9 Stainless Steel 321 / 321H Hexagonal Tube 13mm to 85mm 0.5mm-2.0mm
10 Stainless Steel 321 / 321H Handrail Tube 0.5mm-2.0mm
11 Stainless Steel 321 / 321H U Shaped Tube 20mm to 200mm 0.5mm-2.0mm
12 321/321H Thin-Wall Stainless Steel Tube 22mm*0.7mm to 108mm*2.0mm 0.5mm-2.0mm
13 321/321H Inner/Outside Polished Stainless Steel Tube, Pipes 12.5mm to 203.2mm 1.0mm – 5mm
14 Stainless Steel 321 / 321H Capillary Tube 0.28mm to 10mm 0.08mm – 1.2mm
15 Stainless Steel 321 / 321H Seamless Tube 6mm to 430mm 0.8mm – 30mm

Origin of material (Make):


V & M France

Mannesmann Brazil

Dalmine Italy

Tubacex Spain


Nippon Steel & Sumitomo Metal, Japan

Sumitomo Japan

ArcelorMittal Romania

JFE Steel Corporation Japan


Ratnamani India

Rajendra Industrial Corporation India

Outokumpu Finland

Welspun India


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