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Home > Stainless Steel > Stainless Steel 347 and 347H Welded Tubing
Impex Tube India is a well-known exporter and supplier of high-grade pipes and tubes in Mumbai, India. The organization provides premium offerings of Stainless Steel 347 and 347H Welded Tubing, which have been known to perform extraordinarily in high-temperature and corrosive conditions. With state-of-the-art manufacturing units and strict compliance with international quality standards, Impex Tube India delivers dependable and long-lasting tubing solutions to industries. Their dedication to innovation, on-time delivery, and customer satisfaction has established them as a reliable name in the stainless steel tubing business in India and international markets.
Stainless Steel 347 and 347H Welded Tubing are stabilized austenitic stainless steels with chromium (17–20%), nickel (9–13%), and niobium (columbium), which improves resistance to intergranular corrosion. 347H is a high-carbon version intended for better performance at high temperatures. These tubes have mechanical properties like tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of approximately 35%. Their good mechanical strength, weldability, and resistance to oxidation and creep at high temperatures make them best suited for harsh industrial applications that subject them to high temperatures and corrosive agents.
Welded Tubes Size : 1 / 8″ NB – 24″ NB
Specifications : ASTM A/ASME SA213, A249, A269, A312, A358
Standard : ASTM, ASME and API
Length : Single Random, Double Random & Required Length
Outer Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB
Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types : Welded
Form : Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
End : Plain End, Beveled End, Treaded
| Element | C | Cr | Mn | Ni | P | S | Si | Cb/Ta |
|---|---|---|---|---|---|---|---|---|
| 347 | 0.08 max | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.04 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| 347H | min: 0.04 max: 0.10 | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.03 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choose Stainless Steel 347 and 347H Welded Tubing from Impex Tube India for exceptional corrosion resistance, superior strength and excellent durability. Ideal for a variety of industrial applications it provides outstanding performance in harsh environments. With precision manufacturing and quality assurance, we ensure reliable and durable tubing solutions.
Impex Tube India is the largest supplier of Stainless Steel 317 and 317L Welded Tubing in Mumbai, India. Known for its high-quality products. We offer superior corrosion resistance, strength, and durability. Trusted by industries worldwide they provide reliable precision-engineered tubing for various applications and project needs.
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
| SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
| SS 347H | 1.4961 | S34709 | SUS 347H | – | X6CrNiNb18-12 |
Yes, Impex Tube India offer large custom designs for Stainless Steel 347 and 347H Welded Tubing. With design, wall thickness and length. Their adjustable options ensure the tubing meets specific application requirements. This flexibility makes it more efficient and reliable for different industries and environments. For more details, contact us at sales@impextubeind.com.
Stainless Steel 347 and 347H Welded Tubing is extensively utilized where there is a need for outstanding high-temperature strength and resistance to corrosion. Some of the applications include power generation systems, chemical processing plants, oil and gas refineries, and heat exchanger equipment. Their resistance to intergranular corrosion upon welding makes them suitable for pressure vessels and boiler parts. 347H, being a material with increased carbon content, is particularly recommended for continuous exposure to high temperature service, as in reheater tubes and superheaters. Further, due to their endurance and cleanliness, they are fit to be utilized in food processing, pharmaceutical, and aerospace sectors where reliability and performance are priorities.
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