- sales@amanpipesandtubes.co.in
- Hyderabad, India
Home > Stainless Steel > Stainless Steel 321 and 321H Welded Tubing
Aman Pipes and Tubes, a reputable manufacturer and supplier located in Hyderabad, India, specializes in high-performance Stainless Steel 321/321H Welded Tubing designed for tough industrial applications. SS 321 is a titanium-stabilized austenitic stainless steel that boasts remarkable resistance to intergranular corrosion post-welding, while SS 321H, its high-carbon counterpart, provides enhanced strength and creep resistance at elevated temperatures. These welded tubes are perfect for heat-intensive and corrosive settings. Aman guarantees precise dimensions, smooth internal finishes, and adherence to international quality standards, making their 321/321H welded tubing a dependable choice for various applications, including chemical processing, thermal systems, oil & gas, and beyond.
Stainless Steel 321/321H Welded Tubing mainly consists of Chromium (17–19%), Nickel (9–13%), and Titanium (≥5xC%) to prevent carbide formation. SS 321H has a higher carbon content (0.04–0.10%) compared to SS 321 (≤0.08%), which boosts its creep resistance at high temperatures. The mechanical properties feature a tensile strength of around 515 MPa, yield strength of about 205 MPa, and an elongation of roughly 35%. These tubes are known for their excellent weldability, oxidation resistance up to 870°C, and good formability. The welded design ensures cost-effectiveness and consistent wall thickness, making them ideal for structural and process piping applications.
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 Aman 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.
Aman Pipes and Tubes is the largest supplier of Stainless Steel 317 and 317L Welded Tubing in Hyderabad, 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, Aman 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@amanpipesandtubes.co.in.
Stainless Steel 321/321H Welded Tubing finds extensive use in industries that require exceptional heat and corrosion resistance. Typical applications include heat exchangers, exhaust systems, superheaters, furnace components, and chemical process piping. SS 321 is favored in situations where intergranular corrosion resistance after welding is crucial, while SS 321H is selected for environments with prolonged high-temperature exposure and increased mechanical stress. These tubes are well-suited for oil refineries, power generation facilities, aerospace systems, and thermal applications.
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