A358 GR 347H

347H Pipes, Stainless Steel Pipes, High-Temperature Pipes, Niobium-Stabilized Pipes, EFW Pipes

Kwality Steelage Pvt. Ltd., a trusted manufacturer, supplier, and exporter based in Mumbai, India, proudly presents A358 GR 347H Stainless Steel Pipes. These pipes are designed for applications requiring exceptional strength, resistance to intergranular corrosion, and high-temperature stability. Stabilized with niobium and optimized with high carbon content, A358 GR 347H pipes are ideal for use in demanding industries such as petrochemicals, power plants, and heat exchangers.

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A358 GR 347H

Available in sizes ranging from 6 inches to 60 inches nominal bore (NB), these pipes can be customized with wall thicknesses in schedules such as SCH 10, SCH 40, SCH 80, and SCH XXS. They exhibit superior mechanical properties, including a tensile strength of 515 MPa and a minimum yield strength of 205 MPa, making them reliable under extreme conditions. The high carbon content enhances creep resistance, ensuring prolonged performance in high-pressure and high-temperature environments.

A358 GR 347H Stainless Steel Pipes are composed of 17-19% chromium, 9-13% nickel, and controlled carbon content (0.04-0.10%) with niobium stabilization. This unique composition offers excellent resistance to oxidation, scaling, and stress corrosion cracking. The pipes are available in various forms, including round, square, and rectangular, with options for plain, beveled, or threaded ends. Surface finishes such as polished, pickled, and passivated coatings are also offered to meet specific project requirements.

To ensure precision and compatibility with international standards, A358 GR 347H pipes maintain strict dimensional tolerances with an outside diameter variation of ±1% and a wall thickness tolerance of +12.5%/-10%. These pipes undergo rigorous testing, including ultrasonic, radiographic, and hydrostatic examinations, to guarantee the highest quality. With a proven track record of supplying to global markets across Asia, Europe, and the Americas, Kwality Steelage Pvt. Ltd. ensures reliability and customer satisfaction. Contact us today to explore our range of A358 GR 347H Stainless Steel Pipes and secure solutions tailored to your industrial needs.

Specification Chart for A358 GR 347H Stainless Steel Pipes

Specification Details
Size Range 6 to 60 inches NB
Wall Thickness Range SCH 10, SCH 40, SCH 80, SCH XXS
Applications Heat Exchangers, Power Plants, Chemical Processing, Petrochemical Industry
Pipe Type Electric Fusion Welded (EFW)
Pipe Form Round, Square, Rectangular
Manufacturing Process Heat-Treated (Annealed, Stress-Relieved)
Material Composition 17-19% Chromium, 9-13% Nickel, Niobium-Stabilized, High Carbon Content
End Type Plain, Beveled, Threaded
Surface Finish Pickled, Polished, Passivated
Length Options Single Random, Double Random, Custom Lengths

Dimensional Tolerances for A358 GR 347H Stainless Steel Pipes

Tolerance Type Outside Diameter (OD) Wall Thickness (WT)
Size Tolerance ±1% of specified OD +12.5% / -10% of specified WT

Mechanical Properties of A358 GR 347H Pipes

Grade Yield Strength (Min) Tensile Strength (Min) Elongation (%)
347H 205 MPa 515 MPa 35%

Chemical Composition of A358 GR 347H Pipes

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) 10x(C) minimum to 1.0%

Price Range (per Metric Ton)

Pipe Type Price Range (USD)
A358 GR 347H Stainless Steel Pipes $5,500 – $8,000

Welding and Heat Treatment for A358 GR 347H Pipes

A358 GR 347H Stainless Steel Pipes require meticulous welding and heat treatment to ensure durability and high-performance capabilities. Stabilization with niobium prevents carbide precipitation, ensuring excellent resistance to intergranular corrosion. Annealing is performed at 1010-1120°C to enhance mechanical and thermal properties, making these pipes suitable for prolonged high-pressure and high-temperature applications.

Differences Between A358 GR 347H and GR 347 Pipes

Feature GR 347H GR 347
Carbon Content Higher (0.04-0.10%) Lower (0.08% max)
Creep Resistance Superior for Prolonged Exposure Moderate
Applications High-Temperature, Stress-Resistant General Industrial Use

Ensure the success of your industrial operations with A358 GR 347H Stainless Steel Pipes from Kwality Steelage Pvt. Ltd.. Designed for high-temperature resilience and superior corrosion resistance, these pipes guarantee unmatched performance. Contact us today for expert advice and customized solutions!