SS 321 and 321H Stainless Steel Pipes and Tubes

Silver Tubes, a trusted manufacturer and supplier, specializes in providing premium-grade SS 321 pipe and stainless steel 321H tubes to industries worldwide. Renowned for their resistance to intergranular corrosion and scaling at high temperatures, these titanium-stabilized austenitic stainless steels These materials are perfect for uses calling for long-term operation in temperatures ranging from 427°C to 816°C, as titanium helps to avoid carbide precipitation. Our product range includes SS 321 seamless pipes, SS 321H seamless tubes, stainless steel 321 welded pipes, and SS 321H welded tubes, all designed to meet stringent quality standards.

The chemical composition of SS 321 and 321H, which includes chromium (17–19%), nickel (9–12%), and titanium (minimum 0.7%, or five times the carbon content), guarantees the mechanical stability and corrosion resistance. These materials are appropriate for severe conditions because of their tensile strength of over 515 MPa, yield strength of 205 MPa, and excellent stress rupture characteristics. In intermittent use, they have extraordinary oxidation resistance up to 870°C; in continuous service, they have 925°C. Silver Tubes ensures the mechanical and chemical conformity of all its products to worldwide standards, including ASTM A312 and A213.

Our SS 321 and 321H pipes and tubes are available in diverse sizes to meet various industrial requirements. We offer seamless pipes and tubes with an outer diameter ranging from 6 mm to 219.1 mm and welded pipes with an outer diameter up to 1219 mm. Wall thicknesses vary from 0.5 mm to 20 mm, allowing flexibility for applications with high-pressure and high-temperature demands. Whether it’s seamless or welded, we deliver precision-engineered products tailored to your specifications.

Critical applications such as heat exchangers, boiler tubes, furnace components, and chemical processing equipment widely use the SS 321 seamless pipes and stainless steel 321 welded pipes. Projects needing increased creep strength and stress rupture characteristics choose SS 321H seamless tubes and SS 321H welded pipes. These goods fit sectors like petrochemical, power-generating, and oil and gas as they offer better resistance to harsh chemicals, scaling, and oxidation.

About Stainless Steel 321/321H Pipes Tubes:
Stainless steel pipes and tubes have comparable oxidation resistance, machinability, and excellent low-temperature toughness to type 304. These pipes and tubes have a low carbon grade, which is consuming the chromium content usually throughout the structure. These Pipes and Tubes used for aircraft piston engine manifolds exhaust stacks, and expansion joints. Stainless Steel 321/321H Pipes Tubes is typically examined to have proportional weldability to types 304L and 304. So, these pipes and tubes have vast use in parts of aircraft, such as disable systems where current temperatures are more than 800 degrees F. The general applications of stainless steel pipes and tubes are industrial boilers, chemical and pharmaceutical equipment, chemical process heat exchanger, oil refinery equipment, pressure vessels, and petrochemical refineries. The superior qualities of these 321/321H Pipes and Tubes like chemical, sugar, pharmaceutical, and engineering used in various industries. We offer these seamless steel tubes at a high standard and multiple sizes.

Documentation provided:
Quality assurance plan, certificate of origin, material traceability report, commercial invoice, and raw material test report, etc. are some necessary documents submitted to the buyers. Also, other documents like third party test report and radiography test report provided.

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.

Why Choose Silver Tubes?

As a leading manufacturer and supplier, Silver Tubes is committed to delivering high-quality stainless steel products that excel in performance and durability. For dimensional correctness, mechanical qualities, and chemical composition, we painstakingly test our SS 321 and 321H pipes and tubes. Focusing on innovation, quality, and customer satisfaction, we make sure our products satisfy the most exacting industrial needs and provide unparalleled value for your money and dependability.

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 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 Silver Tubes 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 supplier 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 Silver Tubes 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
								(0.70max.)
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
								(0.70max.)

321/321H Stainless Steel Pipes, Tube Mechanical Properties

	321
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

Suppliers of Stainless Steel Pipe, Stainless Steel Tube, Stainless Steel Tubing to more than 60 countries for over 2 decades, we have our dealers & distributors in :

Malaysia	Singapore	Thailand	Indonesia
Vietnam	Kuwait	Philippines	Saudi Arabia
Qatar	UAE	Egypt	Turkey
UK	Canada	South Africa	India
Mexico	Chile	Brazil	Peru
Kuwait	Jordan	Thailand (Bangkok)	Iran
Australia	New Zealand	Sri Lanka	Vietnam
Nigeria	Russia	Kazakhstan	Kazakhstan

Suppliers of Stainless Steel Pipe, Stainless Steel Tube, Stainless Steel Tubing to more than 60 Cities for over 2 decades, we have our dealers & distributors in :

Mumbai	Delhi	Bangalore	Hyderabad
Ahmedabad	Chennai	Kolkata	Surat
Pune	Thane	Vadodra	Rajkot
Ranchi	Coimbatore	Bhubaneswar	Salem
Mangalore	Bhavnagar	Ankleshwar