321, 321H Stainless Steel Pipes, Tubes

HomeProduct321, 321H Stainless Steel Pipes, Tubes
HomeProduct321, 321H Stainless Steel Pipes, Tubes

321, 321H Stainless Steel Pipes, Tubes

321, 321H Stainless Steel Pipes, Tubes

ASTM A312 TP321/321H Stainless Steel Seamless Pipes, UNS S32100/UNS S32109 Seamless Pipes, WNR 1.4878 Tubes Supplier

An ISO 9001:2008 Certified Company, Steelmet Industries is a leading exporter and supplier of stainless steel 321/321H seamless pipes and tubes available with complete certifications – Mill TC EN 10204 3.1, NABL approved lab test reports, PMI reports. We are stockholder and supplier of 321/321H stainless steel pipes and tubes in a wide range sizes, surface treatment, and ASTM standards. UNS S32100 | UNS S32109 | WNR 1.4541 | WNR 1.4878

  • Brand :Steelmet Industries, European Origin, Indian Origin, US Origin, Korean Origin, Sweden Origin, Ukraine Origin, Japanese Origin Materials
  • Manufacturer :Steelmet Industries, Sumitomo Japan, Nippon Steel corporation - Japan, Centravis - Ukraine, Posco - Korea, Indian Mills, German Mills, US Mills
  • Model :6mm 1/4 inch OD upto 24 inch

Grade 321 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. 321 stainless steel has good welding and forming capabilities and is widely used in operating temperature environments in excess of 500° C. Stainless steel 321H, commonly referred as UNS S32109, is the higher carbon version of the 321 grade, to provide higher temperature strength.

321/321H pipes, tubes and 321H pipe fittings are mainly used in manufacturing heat exchangers, pressure vessels, pharmaceutical and chemical processing equipments.

Stainless Steel 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 Pipes, Tubes / Tubing, and Butt Weld Fittings

Stainless Steel 321/321H pipes and tubes are available in both seamless and welded form in OD and NB sizes. In addition to standard sizes, which are available in stock, our specialty is to manufacture and supply custom size 321/321H cold drawn seamless tubes from our factory.

Stainless Steel 321/321H pipes and tubes can be offered in random lengths of up to 6meters long or cut to a specific length as ordered. We also offer a complete range of stainless steel 321/321H grade butt weld fittings including 321 elbow, 321 bends, 321 tees, reducers and caps.

Why Choose Steelmet Industries for Stainless Steel 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 Pipes & Tubes?

  1. ✔ Short Delivery Times – We are the quickest when it comes to servicing our customers with high quality stainless steel 321/321H pipes and tubes.
  2. ✔ Custom Sizes: We can process stainless steel 321/321H pipes and tubes to produce and supply either standard or non-standard stainless steel pipes.
  3. ✔ Best Prices: Our prices for stainless steel 321/321H pipes are competitive.
  4. ✔ Quality Products: We make sure that our quality of SS 321/321H pipes and tubes are compromised at any cost.
  5. ✔ Complete Certification: Our products are supplied with complete certification – Mill TC, Test Reports from NABL approved Labs, Hydro Testing.
  6. ✔ Pipe Fittings and Flanges: We are a manufacturer of 321 forged pipe fittings, 321 butt weld pipe fittings, 321 compression ferrule fittings, and 321/321H flanges, offering our customers the convenience to purchase all their requirements from one vendor.
  7. ✔ Complete Documentation: For our overseas customers in the Middle East, GCC region, South Amercia and the African region we offer our SS 321/321H grade materials with all documents including Invoice, Packing List, Mill Test Certificates, Certificate of Origin and Bill of Lading

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

  1. ✔ SS 321/321H Welded and Seamless Tubes, Pipes
  2. ✔ SS 321/321H Hydraulic and Instrumentation Tubes
  3. ✔ SS 321/321H Coiled Tubing
  4. ✔ SS 321/321H Capillary Tubes
  5. ✔ SS 321/321H Seam Welded and Cold Redrawn Pipe and Tubes
  6. ✔ SS 321/321H Seam Welded, Cold Redrawn and Annealed Pipes and Tubes

321/321H Stainless Steel Pipes, 321/321H Stainless Steel Tubes Value Added Processing Services

  1. ✔ 321/321H Stainless Steel Pipe Polishing
  2. ✔ 321/321H Stainless Steel Pipe Beveling
  3. ✔ Heat Treatment, Annealing, Pickling of SS 321/321H ERW, Seamless Pipes
  4. ✔ Ultrasonic Testing of SS 321/321H Pipes
  5. ✔ 100% X-Ray Welding for 321/321H Large Diameter Custom Size Stainless Steel Pipes
  6. ✔ Drawing Services
  7. ✔ Special Testing Requirements – Destructive Testing, Non Destructive Testing etc.

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

Outside Diameter: 6.00 mm OD up to 250 mm OD, Sizes up to 12” 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

Markings on the Stainless Steel 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 Seamless/Welded Pipes

The full identification of the pipe should be continuously marked down its whole length, including:

  1. ✔ Nominal Pipe Size (Nominal Bore)
  2. ✔ Schedule (Wall Thickness)
  3. ✔ Specification
  4. ✔ Grade
  5. ✔ Method of Manufacture (Seamless or Welded)
  6. ✔ Heat Number
  7. ✔ Manufacturer’s Name or Symbol

Export Destinations for Stainless Steel 321/321H Pipes and Stainless Steel 321/321H Tubes

Product reliability and performance has made Steelmet Industries a leading exporter and distributor of stainless steel 321/321H pipes, stainless steel 321/321H tubes and stainless steel 321/321H tubing in India and international markets such as UAE, Bahrain, Indonesia, Malaysia, Mexico, Chile, Brazil, Peru, Nigeria, Kuwait, Jordan, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan, Saudi Arabia. Our high quality steel pipes, good customer service, and in house pipes and tubes processing capabilities have made us one of the emerging suppliers for steel pipes and tubes in Middle East countries including Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates and Yemen.

Domestic Supply Destinations for Stainless Steel 321/321H Pipes and Stainless Steel 321/321H Tubes

Our products are supplied to all major Industrial areas and cities in India such as Mumbai, Delhi, Bangalore, Hyderabad, Ahmedabad, Chennai, Kolkata, Surat, Pune, Nagpur, Indore, Thane, Bhopal, Visakhapatnam, Vadodra, Nashik, Faridabad, Rajkot, Aurangabad, Ranchi, Coimbatore, Raipur, Mysore, Bhubaneswar, Salem, Bhilai, Bhiwandi, Bikaner, Mangalore, Kochi (Cochin), Bhavnagar, Tirupur, Ankleshwar, Assam, Siliguri, Jamshedpur, Warangal, Nellore, Agartala and Thoothukudi

321/321H Stainless Steel Pipes, Tube 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

321/321H Stainless Steel Pipes, Tube Mechanical Properties

Density 7.92
Melting Range,℃ 1398-1446
Elongation % 40
Tensile Strength (Mpa) 515
Yield Strength (Mpa) 205
Hardness (Brinell) 217
321/321H Stainless Steel Pipes, Tube Stock and Supply Range

Sr. No.

Product Description

Outside Diamter, OD (in mm)

Wall Thickness, WT (in mm)


321/321H Stainless Steel Round Pipe/Tube

6mm – 630mm



321/321H Stainless Steel Square Pipe/Tube

12.7mm* 12.7mm to 300mm* 300mm



321/321H Stainless Steel Rectangular Pipe/Tube

10*20mm to 100*200mm



321/321H Stainless Steel Colour Coated Pipe/Tube

6mm to 630mm



321/321H Stainless Steel Ornamental Tubes

12.7mm to 76.2mm



321/321H Stainless Steel Electropolished Pipes/Tubes

12.7mm to 250mm



321/321H Stainless Steel Slot Round Pipe/Tube

12.7mm to 76.2mm



321/321H Stainless Steel Triangle Tube

16mm to 85mm



321/321H Stainless Steel Hexagonal Tube

13mm to 85mm



321/321H Stainless Steel Handrail Tube



321/321H Stainless Steel U Shaped Tube

20mm to 200mm



321/321H Thin-Wall Stainless Steel Tube

22mm*0.7mm to 108mm*2.0mm



321/321H Inner/Outside Polished Stainless Steel Tube, Pipes

12.5mm to 203.2mm

1.0mm – 5mm


321/321H Stainless Steel Capillary Tube

0.28mm to 10mm

0.08mm – 1.2mm


321/321H Stainless Steel Seamless Tube

6mm to 430mm

0.8mm – 30mm