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Home > Stainless Steel > Stainless Steel 321 and 321H Welded Tubing
With its headquarters in Chennai, India, Vipul Pipes and Tubes is a reputable producer and supplier of premium stainless steel 321 and 321H welded tubing for a variety of industrial uses. These grades of stabilised austenitic stainless steel provide exceptional resistance to intergranular corrosion and are especially designed for high-temperature applications. While SS 321H is its high-carbon counterpart, offering increased strength at higher temperatures, SS 321 is titanium-stabilized. In India and abroad, Vipul Pipes and Tubes’ welded tubing is perfect for heat exchangers, chemical processing, and aerospace applications because it guarantees exact dimensions, smooth surface finishes, and exceptional weld integrity.
The components of Vipul Pipes and Tubes’ stainless steel 321 and 321H welded tubing are carbon (~0.08% in 321, ~0.04–0.10% in 321H), nickel (9–12%), chromium (17–19%), and titanium (≥5x C%). Up to 870°C, these elements provide outstanding resistance to oxidation. Tensile strength ≥515 MPa, yield strength ≥205 MPa, and elongation ≥35% are examples of mechanical properties. For applications involving pressure vessels, 321H offers exceptional creep strength. Both grades are dependable options for corrosive and high-temperature settings because they preserve ductility and weldability while thwarting carbide precipitation.
Welded Tubes Size : 1 / 8″ NB – 24″ NB
Specifications : ASTM A/ASME SA213, A249, A269, A312, A358
Standard : ASTM, ASME and API
Length : Single Random, Double Random & Required Length
Outer Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB
Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types : Welded
Form : Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
End : Plain End, Beveled End, Treaded
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choose Stainless Steel 321 and 321H Welded Tubing from Vipul Pipes and Tubes for exceptional corrosion resistance, superior strength and excellent durability. Ideal for a variety of industrial applications it provides outstanding performance in harsh environments. With precision manufacturing and quality assurance, we ensure reliable and durable tubing solutions.
Vipul Pipes and Tubes is the largest supplier of Stainless Steel 317 and 317L Welded Tubing in Chennai, India. Known for its high-quality products. We offer superior corrosion resistance, strength, and durability. Trusted by industries worldwide they provide reliable precision-engineered tubing for various applications and project needs.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Yes, Vipul Pipes and Tubes offer large custom designs for Stainless Steel 321 and 321H Welded Tubing. With design, wall thickness and length. Their adjustable options ensure the tubing meets specific application requirements. This flexibility makes it more efficient and reliable for different industries and environments. For more details, contact us at sales@vipulpipesandtubes.co.in.
Refineries, petrochemical facilities, thermal power plants, aircraft exhaust systems, and furnace components all make extensive use of the stainless steel 321 and 321H welded tubing from Vipul Pipes and Tubes. They are perfect for heat exchangers, boiler tubes, and chemical processing equipment because of their resistance to oxidation, scaling, and intergranular corrosion at high temperatures. Particularly in pressure piping and superheaters, 321H’s high carbon content enables it to tolerate creep and stress rupture conditions. For crucial operations needing high strength, thermal stability, and corrosion resistance under both ambient and elevated service conditions, these welded tubes are reliable.
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