Weston Stainless, with headquarters in Midland, UK, is a top company offering top-quality stainless steel products, delivering strong and precision-crafted solutions to industrial uses. Their Stainless Steel 321 Pipes are constructed from an austenitic stainless steel alloy, titanium-stabilized, possessing good resistance to intergranular corrosion and oxidation at high temperatures. These pipes have different shapes, such as seamless, welded, round, and square, which suit different engineering requirements. The stainless steel composition of SS 321 provides excellent strength, weldability, and resistance, making it a perfect solution for applications involving resistance to extreme temperatures and aggressive conditions.
| Standard | ASTM A312, A358 / ASME SA312, SA358 |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated Pipes |
| Form | Round, Square, Rectangular, Oval, Hydraulic Etc |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements |
| Grade | C | N | Ni | Si | P | S | Mn | Cr | TI | |
|---|---|---|---|---|---|---|---|---|---|---|
| SS 321 | Min | – | – | 9.00 | – | – | – | – | 17.0 | 5(C+N) |
| max | 0.08 | 0.10 | 12.00 | 1.00 | 0.045 | 0.030 | 2.00 | 19.0 | 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 % |
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Stainless Steel 321 Pipes are made up of 17-19% chromium, 9-12% nickel, and titanium (five times the content of carbon at least) for improving thermal stability. These pipes possess a tensile strength of about 515 MPa, yield strength of 205 MPa, and elongation of 40%. The hardness is about 95 HRB. SS 321 physically possesses a density of 7.9 g/cm³, melting point of 1400°C, and thermal conductivity of 16.3 W/m-K, providing great mechanical and thermal stability in high-temperature conditions.
High-temperature oxidation. Available in various sizes, typically from 1″ to 6″, with wall thicknesses ranging from 1.5mm to 5mm. It is ideal for structural and architectural applications requiring a polished, aesthetic appearance.
Highly resistant to intergranular corrosion and oxidation. Sizes range from 1/8″ to 24″ in diameter, with wall thicknesses from 1mm to 12mm. Suitable for high-temperature service and applications requiring high pressure.
Excellent resistance to oxidation and corrosion. Commonly produced in sizes from 1″ to 24″ in diameter, with wall thicknesses from 2mm to 10mm and used in construction and pipelines for moderate pressure and temperature conditions.
Corrosion resistant with enhanced strength for large diameter applications. Typically available in sizes from 12″ to 60″ diameter with wall thicknesses up to 20mm. It is ideal for high-pressure and high-temperature applications in the oil and gas industry.
Superior resistance to high-temperature oxidation and corrosion. Standard sizes range from 1/8″ to 12″ in diameter, with wall thicknesses from 1mm to 10mm. They are commonly used in various industrial and structural applications.
Corrosion resistance with good high-temperature stability. Available in sizes from 1″ to 24″ in diameter, with wall thicknesses ranging from 1.5mm to 12mm. Suitable for a variety of applications, including chemical and petrochemical industries.
Stainless Steel 321 Pipes are extensively utilized in aerospace, petrochemical, power generation, and chemical processing industries. Due to their high-temperature strength and resistance to oxidation, they are well suited for exhaust systems, heat exchangers, boiler tubes, and furnace parts. They are also utilized in pressure vessels, marine use, and refinery equipment, where exposure to aggressive chemicals and high temperatures is prevalent. Their high weldability and corrosion resistance make them a choice of preference for harsh industrial conditions calling for long-lasting durability.
Weston Stainless offers test certificates, such as Mill Test Certificates (MTC) according to EN 10204 3.1, in accordance with industry standards. Pipes are safely packaged in wooden crates, plastic wrap, or carton boxes to avoid damage in transit. Having a robust logistics network, Weston Stainless ensures reliable and timely worldwide delivery, efficiently meeting urgent industrial needs.
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