Stainless Steel 347 and 347H Welded Pipes

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Stainless Steel 347 and 347H Welded Pipes Manufacturer, Supplier and Exporter in Chennai, India

Stainless Steel 347 and 347H Welded Pipes are among the high-end stainless steel piping solutions that Vipul Pipes and Tubes, a renowned manufacturer and supplier with headquarters in Chennai, India, specialises in providing. These stabilised austenitic stainless steels have exceptional mechanical strength and resistance to intergranular corrosion, making them ideal for high-temperature applications. Vipul produces precisely welded pipes that adhere to international standards like ASTM A312 and ASME SA312. Vipul provides services to a wide range of industries, including petrochemicals, refineries, power generation, and thermal processing, and is steadfast in its dedication to quality, on-time delivery, and customer satisfaction.

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Niobium (Columbium) stabilises the 17–20% chromium and 9–13% nickel that make up stainless steel 347 and 347H welded pipes, preventing carbide precipitation during the welding process. The main distinction is that 347H has a higher carbon content (0.04–0.10%), which improves creep resistance and high-temperature strength. With tensile strengths ranging from 515 to 750 MPa and yield strengths between 205 and 275 MPa, both grades provide exceptional mechanical qualities. They are appropriate for pressure-bearing and thermal cycling environments because they retain good weldability, corrosion resistance, and oxidation resistance at high temperatures.

Stainless Steel 347 and 347H Welded Pipes Welded Pipe Specification

Specifications : ASTM A312 / ASME SA312

Outside Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size available Ex-stock

Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Size : 1/2″ NB – 24″ NB

Type : Welded

Form: Round Pipes, Square Pipes, Rectangular Pipes.

Length : Single Random, Double Random & Required Length

End : Plain End, Beveled End, Treaded

Equivalent Grades for Stainless Steel 347 and 347H Welded Pipes

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

Stainless Steel 347 and 347H Welded Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Cb	Ni	Fe
SS 347	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 20.00	10xC – 1.10	9.00 – 13.00	62.74 min
SS 347H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	8xC – 1.10	9.0 -13.0	63.72 min

SS 347 and 347H Welded Pipes Mechanical Properties

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 %

If You Are Looking To Buy High Quality

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

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Why Choose 347 and 347H Stainless Steel Welded Pipes from Vipul Pipes and Tubes?

Choosing Stainless Steel 347 and 347H Welded Pipes guarantees excellent corrosion resistance, high strength, and durability. Designed for diverse industrial applications, it delivers reliable performance in tough environments while maintaining competitive pricing for cost-effective solutions.

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Largest 347 and 347H Stainless Steel Welded Pipes Supplier in Chennai, India

Vipul Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 347 and 347H Welded Pipes in Chennai, India, offers a comprehensive range of high-quality pipes and tubing suitable for various industrial applications. Our extensive inventory and commitment to exceptional service make us a trusted choice for regional products.

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347 and 347H Stainless Steel Welded Pipe Sizes

NB Sizes	Sch 5	Sch 10	Sch 40	Sch 80	Sch 160
1/8″	✓	✓	✓	✓
1/4″	✓	✓	✓	✓
3/8″	✓	✓	✓	✓
1/2″	✓	✓	✓	✓	✓
3/4″	✓	✓	✓	✓	✓
1″	✓	✓	✓	✓	✓
1 1/4″	✓	✓	✓	✓	✓
1 1/2″	✓	✓	✓	✓	✓
2″	✓	✓	✓	✓	✓
2 1/2″	✓	✓	✓	✓	✓
3″	✓	✓	✓	✓	✓
4″	✓	✓	✓	✓	✓
5″	✓	✓	✓	✓
6″	✓	✓	✓	✓

Types of 347 and 347H Stainless Steel Welded Pipes

Are Custom Sizes Available for 347 and 347H Stainless Steel Welded Pipes?

We offer custom sizes for Stainless Steel 347 and 347H Welded Pipes to meet your specific needs. Our dedicated team at Vipul Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@vipulpipesandtubes.co.in.

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Industries that frequently experience high temperatures and high pressures make extensive use of stainless steel 347 and 347H welded pipes. Heat exchangers, boilers, furnace components, chemical process equipment, and high-temperature gaskets are examples of common applications. Because of their exceptional mechanical performance at high temperatures and resistance to intergranular corrosion, they are especially helpful in thermal processing systems, power plants, and petroleum refineries. They are perfect for applications requiring little maintenance because of their long service life and weldability. These pipes are also used in the food processing, marine, and aerospace industries where corrosion resistance and thermal stability are essential.