A well-known producer and supplier with headquarters in Chennai, India, Vinit Stainless specialises in providing premium stainless steel 348 pipes made to withstand high temperatures and corrosive conditions. Because the austenitic stainless steel used to make these pipes is niobium-stabilized, it has exceptional resistance to intergranular corrosion, particularly after welding. Our SS 348 pipes are manufactured with rigorous quality control procedures and cutting-edge technology, providing dependable mechanical performance and dimensional accuracy. In order to satisfy both domestic and international standards, Vinit Stainless provides seamless and welded pipes in a variety of sizes and grades to a broad range of industries, including chemical processing, power generation, aerospace, and refineries.
348 Stainless Steel Pipes are made of 9–13% nickel and 17–19% chromium, with niobium (columbium) added to stabilise the alloy against precipitation of carbides. During and after welding, this stabilisation increases resistance to intergranular corrosion. These pipes have a yield strength of roughly 205 MPa and a tensile strength of 515–750 MPa. Up to 800°C, SS 348 maintains its strength and resistance to oxidation, providing exceptional performance at high temperatures. Additionally, the alloy has good toughness, formability, and weldability, making it a dependable and long-lasting option for demanding mechanical and thermal applications.
| Thickness | 0.5mm-100mm | ||||||
| Outer diameter | 10mm, 25.4mm, 38.1mm, 50.8mm, 100mm, 250mm, 300mm, 350mm, etc | ||||||
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc | ||||||
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc | ||||||
| Finish | Hot rolled (HR), Cold rolled Tube (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) | ||||||
| Form | Round tube Square tube Rectangular tube etc. | ||||||
Grade | Ni | Mn | P | C | S | Si | Cr | Mo | N | |
348 | min. | 8.0 | – | – | – | – | – | 18.0 | – | – |
max. | 10.5 | 2.0 | 0.045 | 0.08 | 0.030 | 0.75 | 20.0 | |||
Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
348 | 515 | 40 | 205 | 92 | 201 |
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Stainless 348 Square Pipes are square-shaped pipes made from 348 stainless steel, offering excellent high-temperature resistance, durability, and corrosion resistance, ideal for structural and industrial applications.
SS 348 Seamless Pipes are pipes made from 348 stainless steel without welded seams, providing high-temperature resistance, excellent strength, and durability for demanding industrial and high-heat applications.
SS 348 LSAW Pipes are longitudinally submerged arc welded pipes made from 348 stainless steel, offering superior high-temperature resistance, strength, and durability for use in high-pressure and industrial applications.
SS 309H LSAW Pipes are longitudinally submerged arc welded pipes made from 309H stainless steel, offering high heat resistance and strength, suitable for high-pressure and high-temperature industrial applications.
Stainless Steel 348 Round Pipes are cylindrical pipes made from 348 stainless steel, providing excellent high-temperature resistance, corrosion resistance, and durability, suitable for various industrial and high-heat applications.
Stainless Steel 348 Welded Pipes are made from 348 stainless steel and joined by welding, offering high-temperature resistance, strength, and durability for use in demanding industrial and high-heat environments.
348 Stainless Steel Applications requiring high-temperature strength and corrosion resistance frequently use pipes. Chemical processing, aerospace, power generation, and petrochemicals are examples of typical industries. Heat exchangers, pressure vessels, superheaters, boiler parts, and reactor systems all use these pipes. Because of its resistance to intergranular corrosion, SS 348 is especially well-suited for welded piping systems that undergo thermal cycling. It is also utilised in exhaust manifolds and furnace components, which are constantly exposed to high temperatures and oxidation. The material is perfect for demanding, long-term service conditions due to its mechanical dependability and thermal stability.
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