Nascent Pipe & Tubes is a leading manufacturer, supplier, and exporter of high-quality Stainless Steel 321H Tubes, engineered to meet the demanding requirements of industries operating under high temperatures and corrosive environments. These tubes are crafted using the premium-grade alloy known as UNS S32109, conforming to international standards including ASTM A213 TP321H. Our tubes are widely used in thermal processing, chemical plants, refineries, and aerospace industries due to their excellent resistance to heat, oxidation, and corrosion.
Stainless Steel 321H is a stabilized austenitic stainless steel that includes titanium, offering superior intergranular corrosion resistance even after exposure to temperatures in the chromium carbide precipitation range of 427–816°C. The "H" designation in 321H stainless steel tubes indicates higher carbon content, which enhances the material’s high-temperature strength and creep resistance. This makes our SS 321H seamless tubes a preferred choice for heat exchangers, superheaters, and boiler components.
Stainless Steel 321H Tubes Manufacturers, Stainless Steel 321H Tubes Suppliers, Stainless Steel 321H Tubes Stockists, Stainless Steel 321H Tubes Exporters
Stainless Steel 321H Tubes Manufacturers in India, Stainless Steel 321H Tubes Suppliers in India, Stainless Steel 321H Tubes Stockists in India, Stainless Steel 321H Tubes Exporters in India
At Nascent Pipe & Tubes, we manufacture 321H stainless steel tubes with outstanding dimensional accuracy, superior surface finish, and excellent mechanical properties. These tubes are available in various sizes, thicknesses, and custom lengths as per client requirements. With enhanced weldability and formability, our SS 321H welded tubes are ideal for applications where post-weld annealing is not feasible. Their resistance to oxidation at elevated temperatures up to 900°C ensures long-term performance in challenging operating conditions.
Stainless Steel 321H Tubes Manufacturers In Mumbai, Stainless Steel 321H Tubes Suppliers In Mumbai, Stainless Steel 321H Tubes Stockists In Mumbai, Stainless Steel 321H Tubes Exporters In Mumbai
With years of expertise in stainless steel tubing solutions, Nascent Pipe & Tubes has built a strong reputation for delivering premium UNS S32109 Tubes that offer long-lasting performance and reliability. We export our tubes across various global markets including the Middle East, Europe, and Southeast Asia, ensuring timely dispatch and secure packaging for every consignment. Our commitment to consistent quality and technical excellence makes us a trusted partner for your stainless steel tube requirements.
Specification of Stainless Steel 321H Seamless Tubes
Stainless Steel Pipe Specification : ASTM A312, A358 / ASME SA312, SA358
SS Tube Specification : ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554
Pipe Size :1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.
Tube Size :1/2" OD to 8" OD.
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 Tubes
Form : Round, Square, Rectangular, Oval, Hydraulic Etc
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 Tubes, 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
Chemical Composition of Stainless Steel 321H Seamless Tubes
| C | Mn | Si | P | S | Cr | Ni | N | |
|---|---|---|---|---|---|---|---|---|
| 321H | 0.07max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 10.5 | — |
Mechanical Properties Of Stainless Steel 321H Seamless Tubes
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 321H | 75 | 30 | 40 | 201 | 92 |
Physical Properties of Stainless Steel 321H Seamless Tubes
| SS 316 | ||||||
|---|---|---|---|---|---|---|
| Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/ °F x 10-6 | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
| at 68°F: 0.285 | 9.4 at 212°F | 28.3 at 68°F | 28 | 9.4 at 32 – 212°F | 0.1200 at 68°F to 212°F | 2500 to 2590 |
Equivalent Grades Stainless Steel 321H Seamless Tubes
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
|---|---|---|---|---|
| SS 321H | 1.4438 | S31703 | SUS 321H | X2CrNiMo18-15-4 |
Our Export
Domestic Area
| Mumbai | Ahmedabad | Bhopal | Bikaner | Pune |
| Delhi | Chennai | Visakhapatnam | Mangalore | Nagpur |
| Bangalore | Kolkata | Siliguri | Assam | Indore |
| Hyderabad | Surat | Nashik | Cochin | Thane |
| Faridabad | Rajkot | Aurangabad | Bhavnagar | Ranchi |
| Coimbatore | Mysore | Salem | Tirupur | Bikaner |
| Raipur | Bhubaneswar | Bhilai | Ankleshwar | Bhiwandi |
| Vadodra | Kochi |