What are Stainless Steel 347 Pipes?

Hindco Steel And Alloys is a leading manufacturer and exporter of premium quality Stainless Steel 347 Pipes, engineered to deliver superior performance in high-temperature and corrosive environments. These pipes conform to ASTM A312 TP347 standards and are designated under the UNS S34700 universal specification. Designed for exceptional strength and oxidation resistance, SS 347 is a niobium-stabilized austenitic stainless steel that effectively resists intergranular corrosion even after prolonged heating in the chromium carbide precipitation range of 800°F–1500°F (427°C–816°C).

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We offer a wide range of SS 347 Pipes including seamless, welded, ERW, and fabricated types, which are widely used in chemical processing, heat exchangers, power plants, oil refineries, and marine applications. These pipes provide excellent creep strength and are ideal for applications requiring constant exposure to high temperatures and pressure. Their weldability and formability make them suitable for high-performance industrial piping systems.

Stainless Steel 347 Pipes manufactured by Hindco Steel And Alloys are available in various diameters, wall thicknesses, and lengths as per client specifications. These pipes exhibit high tensile strength, excellent stress rupture properties, and superior corrosion resistance to organic and inorganic acids, especially under oxidizing conditions. The addition of columbium (niobium) in SS 347 enhances its ability to resist sensitization and improves its mechanical properties in high-heat environments, making it a perfect alternative to SS 321 when post-weld heat treatment is not possible.

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With an unwavering commitment to quality, we provide third-party inspection reports and test certificates along with each consignment. Our pipes comply with international standards like ASME SA312, ASTM A358, and other equivalent specifications. We serve industries across the globe and ensure timely delivery of our products, earning us a reputation as a reliable supplier of ASTM A312 TP347 Stainless Steel Pipes in the global market.

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Specifications Of Stainless Steel 347 Pipes

Specifications	ASTM A213, A312, A269, A358 / ASME SA213, SA312, SA269, 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 Range	0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Type	Seamless / ERW / Welded / Fabricated / CDW
Form	Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes
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 Tubes, Finish as per customer Requirements
Delivery Condition	Annealed and Pickled, Polished, Bright Annealed, Cold Drawn

Chemical Composition Of Stainless Steel 347 Pipes

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
SS 347	0.08 max	2 max	0.75 max	0.045 max	0.030 max	18 – 20	-	8 – 11	-

Mechanical Properties Of Stainless Steel 347 Pipes

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1400 °C (2550 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

Application Of Industries

Power Plants

Construction

Petrochemical

Aerospace

Refineries

Chemical

Oil & Gas

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