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Home > Products > Industrial Metal Pipe > ASTM A312 Pipes > A312 GR 309Cb
309Cb Pipes, Stainless Steel Pipes, Columbium-Stabilized Pipes, Corrosion-Resistant Pipes, High-Temperature Applications
Kwality Steelage Pvt. Ltd., a globally recognized manufacturer, supplier, and exporter based in Mumbai, India, presents premium-quality A312 GR 309Cb Stainless Steel Pipes. Renowned for their exceptional resistance to oxidation and corrosion, these pipes are specifically designed for high-temperature and high-pressure applications. The addition of niobium (columbium) enhances their mechanical strength and prevents carbide precipitation, making them an ideal choice for critical industrial environments such as petrochemicals, power plants, and heat exchangers.
A312 GR 309Cb pipes are available in a size range of 1/8 inch to 24 inches in nominal bore (NB) with various wall thicknesses, including SCH 10, SCH 40, SCH 80, and SCH XXS. These pipes are meticulously engineered to meet diverse industrial requirements, offering options such as seamless and welded types, polished and pickled finishes, and plain, beveled, or threaded ends. With a tensile strength of 620 MPa and a yield strength of 310 MPa, these pipes exhibit outstanding durability and performance in extreme conditions.
The chemical composition of A312 GR 309Cb includes 22-24% chromium and 12-15% nickel, along with columbium (niobium) as a stabilizing element. This unique composition ensures excellent resistance to intergranular corrosion and scaling at elevated temperatures. These properties make them indispensable in applications like heat treatment furnaces, chemical processing, and marine environments. Additionally, these pipes conform to strict ASTM standards, ensuring reliability and compatibility with global industrial systems.
Dimensional tolerances for A312 GR 309Cb Stainless Steel Pipes are precisely maintained, with outside diameter tolerances of ±0.25 mm and wall thickness as per ASTM A312 specifications. These pipes undergo rigorous quality testing, including radiographic, ultrasonic, and hydrostatic examinations, to ensure superior product integrity. With advanced manufacturing and testing facilities, Kwality Steelage Pvt. Ltd. delivers pipes that meet and exceed client expectations.
Kwality Steelage Pvt. Ltd. is committed to providing the best quality products and services, offering tailored solutions for diverse industrial applications. With a robust supply chain and extensive global presence, including markets in Europe, the Middle East, and Asia, the company guarantees timely delivery and unparalleled customer satisfaction. Contact us today to learn more about A312 GR 309Cb Stainless Steel Pipes and find the perfect solution for your industrial needs.
| Specification | Details |
|---|---|
| Size Range | 1/8 inch to 24 inch NB |
| Wall Thickness Range | SCH 10, SCH 40, SCH 80, SCH XXS |
| Applications | Heat Exchangers, Petrochemicals, Power Plants, Marine Engineering, Chemical Processing |
| Pipe Type | Seamless, Welded |
| Pipe Form | Round, Square, Rectangular, Hydraulic Pipes |
| Material Composition | 22-24% Chromium, 12-15% Nickel, Columbium (Niobium), Carbon, Manganese, Silicon |
| End Type | Plain, Beveled, Threaded |
| Surface Finish | Polished, Pickled, Passivated |
| Length Options | Single Random, Double Random, Custom Lengths |
| Tolerance Type | Outside Diameter (OD) | Wall Thickness (WT) |
|---|---|---|
| Size Tolerance | ±0.25 mm | As per ASTM A312 |
| Grade | Yield Strength (Min) | Tensile Strength (Min) | Elongation (%) |
|---|---|---|---|
| 309Cb | 310 MPa | 620 MPa | 40% |
| Element | Maximum % Composition |
|---|---|
| Carbon (C) | 0.08% max |
| Manganese (Mn) | 2.00% max |
| Phosphorus (P) | 0.045% max |
| Sulfur (S) | 0.030% max |
| Silicon (Si) | 1.00% max |
| Chromium (Cr) | 22-24% |
| Nickel (Ni) | 12-15% |
| Columbium (Cb) | Stabilized |
| Pipe Type | Price Range (USD) |
|---|---|
| A312 GR 309Cb Pipes | $3,200 – $5,000 |
A312 GR 309Cb Stainless Steel Pipes are known for their excellent weldability. For optimal performance, annealing can be performed at temperatures ranging between 1020-1120°C to relieve stress and enhance corrosion resistance. Stabilizing heat treatments, when necessary, ensure long-term durability and maintain material integrity.
| Feature | GR 309Cb | GR 309S |
|---|---|---|
| Columbium Stabilization | Yes | No |
| Applications | High-Stress, High-Temp | General High-Temp |
| Corrosion Resistance | Enhanced | Standard |
“Trust Kwality Steelage Pvt. Ltd. for your A312 GR 304LN Stainless Steel Pipes needs. Contact us now to get high-quality, reliable solutions tailored to your industrial requirements!
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We Kwality Steelage Pvt. Ltd. are professionally organized firm engaged in exporting and supplying Stainless Steel, Carbon Steel, Alloy Steel, Nickel Alloys, Duplex, Super duplex and other Ferrous & Non-Ferrous Metal products such as Pipes, tubes, Pipe, Tubes, Pipe Fittings, Piping Spools, LR Bends, Sheets, Plates, Rods, Flanges, Fasteners, Gaskets.
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