Nascent Pipe & Tubes is a trusted manufacturer, supplier, and exporter of high-quality Stainless Steel 347 Tubes that offer exceptional durability, high-temperature resistance, and superior corrosion resistance. These pipes are widely used across various industries such as power generation, heat exchangers, chemical processing, petrochemical industries, and marine engineering due to their excellent mechanical properties and stabilization against chromium carbide precipitation.

Stainless Steel 347 is a columbium-stabilized austenitic stainless steel that exhibits enhanced intergranular corrosion resistance. The grade is particularly suitable for high-temperature service as it prevents sensitization and resists intergranular attack even after prolonged exposure to temperatures ranging between 427°C to 899°C. The presence of columbium makes these SS 347 Pipes ideal for applications involving repeated heating and cooling cycles.
Stainless Steel 347 Tubes Manufacturers, Stainless Steel 347 Tubes Suppliers, Stainless Steel 347 Tubes Stockists, Stainless Steel 347 Tubes Exporters
Stainless Steel 347 Tubes Manufacturers in India, Stainless Steel 347 Tubes Suppliers in India, Stainless Steel 347 Tubes Stockists in India, Stainless Steel 347 Tubes Exporters in India
The UNS S34700 grade offers a better creep and stress rupture performance compared to other austenitic stainless steels. The material maintains excellent oxidation resistance up to 1500°F (816°C) and performs well under severe chemical environments. Nascent Pipe & Tubes supplies these pipes in compliance with international specifications including ASTM A312 for seamless and straight-seam welded austenitic pipe intended for high-temperature and general corrosive service, ASTM A213 for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes, and ASTM A358 for electric-fusion-welded austenitic pipe.
Stainless Steel 347 Tubes Manufacturers In Mumbai, Stainless Steel 347 Tubes Suppliers In Mumbai, Stainless Steel 347 Tubes Stockists In Mumbai, Stainless Steel 347 Tubes Exporters In Mumbai
If you are looking for a reliable source for Stainless Steel 347 Tubes, look no further than Nascent Pipe & Tubes. We are committed to providing you with the highest quality materials that meet your project’s requirements with precision and excellence.
Specification of Stainless Steel 347 Seamless Pipes
Stainless Steel Pipe Specification : ASTM A312, A358 / ASME SA312, SA358
SS Tube Specification : ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554
Pipe Size :1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.
Tube Size :1/2" OD to 8" OD.
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 Pipes
Form : Round, Square, Rectangular, Oval, Hydraulic Etc
Length :Single Random, Double Random & Required Length
End : Plain End, Beveled End, Treaded
End Protection : Plastic Caps
Outside Finish :2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Delivery Condition : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Inspection, Test Reports :Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Packing :Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials :Sizes and Specifications other than above can be manufactured on request
Chemical Composition of Stainless Steel 347 Seamless Pipes
C | Mn | Si | P | S | Cr | Ni | N | |
---|---|---|---|---|---|---|---|---|
347 | 0.07max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 10.5 | — |
Mechanical Properties Of Stainless Steel 347 Seamless Pipes
Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
---|---|---|---|---|---|
347 | 75 | 30 | 40 | 201 | 92 |
Physical Properties of Stainless Steel 347 Seamless Pipes
SS 316 | ||||||
---|---|---|---|---|---|---|
Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/ °F x 10-6 | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
at 68°F: 0.285 | 9.4 at 212°F | 28.3 at 68°F | 28 | 9.4 at 32 – 212°F | 0.1200 at 68°F to 212°F | 2500 to 2590 |
Equivalent Grades Stainless Steel 347 Seamless Pipes
STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
---|---|---|---|---|
SS 347 | 1.4438 | S34700 | SUS 347 | X2CrNiMo18-15-4 |
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