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348H Pipe, Stainless Steel Pipes, High-Temperature Pipes, Niobium-Stabilized Pipes, EFW Pipes
Kwality Steelage Pvt. Ltd., a premier manufacturer, supplier, and exporter based in Mumbai, India, proudly offers A358 GR 348H Stainless Steel Pipes, designed to withstand high-temperature and corrosive industrial environments. These pipes are fabricated using niobium and tantalum stabilization, ensuring superior resistance to intergranular corrosion and thermal stress. A358 GR 348H pipes are ideal for applications in chemical processing, power generation, petrochemical industries, and other high-stress environments requiring enhanced material performance.
Available in sizes ranging from 6 inches to 60 inches nominal bore (NB), A358 GR 348H pipes are manufactured with wall thicknesses that comply with various schedules such as SCH 10, SCH 40, SCH 80, and SCH XXS. These pipes offer exceptional mechanical strength with a tensile strength of 515 MPa and a minimum yield strength of 205 MPa. The high carbon content in A358 GR 348H enhances its creep resistance, making it suitable for elevated temperature applications.
The chemical composition includes 17-19% chromium, 9-13% nickel, and niobium/tantalum stabilization, ensuring excellent resistance to oxidation and thermal fatigue. These pipes are available in multiple forms such as round, square, and rectangular, with finishing options like plain, beveled, and threaded ends. Surface treatments like polished, pickled, and passivated ensure durability and superior corrosion resistance, even in aggressive environments.
Dimensional tolerances for A358 GR 348H pipes are meticulously maintained, with an outside diameter variation of ±1% and wall thickness tolerances of +12.5%/-10%. The manufacturing process employs advanced electric fusion welding (EFW) techniques and includes critical heat treatments like annealing at 1050-1120°C. Comprehensive testing, including ultrasonic, hydrostatic, and radiographic inspections, ensures these pipes meet the highest industry standards.
Kwality Steelage Pvt. Ltd. guarantees top-notch quality, global certifications, and prompt delivery to regions across Europe, the Americas, and the Middle East. For industries seeking reliable and high-performing materials, A358 GR 348H Stainless Steel Pipes offer a robust solution. Contact us today to explore customized options for your industrial needs.
Specification | Details |
Size Range | 6 to 60 inches NB |
Wall Thickness Range | SCH 10, SCH 40, SCH 80, SCH XXS |
Applications | Chemical Processing, Power Plants, Petrochemical Industries, High-Temperature Systems |
Pipe Type | Electric Fusion Welded (EFW) |
Pipe Form | Round, Square, Rectangular |
Manufacturing Process | Heat-Treated (Annealed, Stress-Relieved), EFW with Niobium/Tantalum Stabilization |
Material Composition | 17-19% Chromium, 9-13% Nickel, Stabilized with Niobium/Tantalum |
End Type | Plain, Beveled, Threaded |
Surface Finish | Pickled, Polished, Passivated |
Length Options | Single Random, Double Random, Custom Lengths |
Tolerance Type | Outside Diameter (OD) | Wall Thickness (WT) |
Size Tolerance | ±1% of specified OD | +12.5% / -10% of specified WT |
Grade | Yield Strength (Min) | Tensile Strength (Min) | Elongation (%) |
348H | 205 MPa | 515 MPa | 35% |
Element | Maximum % Composition |
Carbon (C) | 0.04-0.10% |
Manganese (Mn) | 2.00% max |
Phosphorus (P) | 0.045% max |
Sulfur (S) | 0.030% max |
Silicon (Si) | 1.00% max |
Chromium (Cr) | 17-19% |
Nickel (Ni) | 9-13% |
Niobium (Nb) + Tantalum (Ta) | 10x(C) minimum to 1.0% |
Pipe Type | Price Range (USD) |
A358 GR 348H Stainless Steel Pipes | $6,700 – $9,200 |
A358 GR 348H Stainless Steel Pipes are manufactured using EFW techniques with niobium and tantalum stabilization. Heat treatment processes such as annealing at 1050-1120°C enhance the mechanical properties and corrosion resistance of these pipes. Post-weld heat treatment is recommended for applications requiring high durability under cyclic thermal stress.
Feature | GR 348H | GR 347H |
Stabilization Elements | Niobium + Tantalum | Niobium Only |
Carbon Content | Higher (0.04-0.10%) | Lower (0.04-0.08%) |
Applications | Extreme Thermal Cycling, High-Temperature Stability | General High-Temperature Applications |
Choose A358 GR 348H Stainless Steel Pipes from Kwality Steelage Pvt. Ltd. for your high-temperature and corrosion-resistant requirements. Backed by global certifications and rigorous testing, we deliver excellence. Contact us now for tailored solutions!
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