Stainless Steel 347 and 347H Seamless Pipes

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

Based in Chennai, India, Vipul Pipes and Tubes is a well-known producer and supplier of 347 and 347H stainless steel seamless pipes, providing excellent solutions for corrosive and high-temperature applications. These grades of stabilised austenitic stainless steel are made to function well in conditions where thermal cycling and intergranular corrosion are issues. Vipul guarantees superior quality, dimensional accuracy, and adherence to global standards for sectors like chemical processing, power generation, oil and gas, and aerospace. Vipul Pipes and Tubes has gained the trust of both domestic and international markets by emphasising durability, high-temperature strength, and prompt delivery.

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Columbium (niobium), which contains 17–20% chromium and 9–13% nickel, stabilises stainless steel 347 and 347H seamless pipes. For improved creep strength at higher temperatures, Grade 347H contains more carbon (0.04–0.10%). Following welding and exposure to high temperatures, these pipes exhibit exceptional resistance to intergranular corrosion. Tensile strength of 515–750 MPa, yield strength of ≥205 MPa, and elongation of 35% are examples of mechanical properties. They are perfect for high-heat, pressure-bearing applications like heat exchangers and boilers because of their improved weldability, oxidation resistance, and thermal stability.

Stainless Steel 347 and 347H Seamless Pipes Specification

Range : 6NB to 1200NB

Outer Diameter : 1/8″ NPS to 12″ NPS

Thickness : 0.6 mm to 12.7 mm

Schedules : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.

Length : Single Random, Double Random & Cut Length

Specifications : ASTM A312 / ASTM SA312

Types : Round, Square, Rectangle, Hydraulic, Honed Tubes

End : Plain End, Beveled End

Equivalent Grades for Stainless Steel 347 and 347H Seamless Pipes

STANDARD	UNS	WERKSTOFF NR.
SS 347	S34700	1.4550
SS 347H	S34709	1.4961

347 and 347H Stainless Steel Seamless Pipes Chemical Composition

SS	347	347H
Ni	09 – 13	09 – 13
N	–	–
Cr	17 – 20	17 – 19
C	0.08 max	0.04 – 0.08
Si	1 max	0.75 max
Mn	2 max	2 max
P	0.045 max	0.045 max
S	0.030 max	0.03 max
OTHER	Nb=10(C+N) – 1.0	8xC min – 1.00 max

SS 347 and 347H Seamless Pipes Mechanical Properties

Grade	347 / 347H
Tensile Strength (MPa) min	515
Yield Strength 0.2% Proof (MPa) min	205
Elongation (% in 50mm) min	40
Hardness
Rockwell B (HR B) max	92
Brinell (HB) max	201

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 347and 347H Stainless Steel Seamless Pipes from Vipul Pipes and Tubes?

Choosing Stainless Steel 347and 347H Seamless Pipes from Vipul Pipes and Tubes guarantees exceptional corrosion resistance and high temperature performance. Their pipes are manufactured to exacting standards, ensuring reliability and durability for complex applications. With a focus on customer service, Brydon offers customized solutions and technical support. In addition, the rugged design reduces leakage, making it reliable for a variety of applications.

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

Vipul Pipes and Tubes, one of the largest suppliers of Stainless Steel 347 and 347H Seamless Pipes in Chennai, India, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.

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Grade specifications of SS 347 and 347HSeamless Pipes

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
347	S34700	347s31	58G	1.4550	X6CrNiNb18-10	2338	SUS 347

Types of 347 and 347H Stainless Steel Seamless Pipes

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

Yes, we offer custom sizes for Stainless Steel 347and 347H Seamless Pipes to meet your specific requirements. Our team at Vipul Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@vipulpipesandtubes.co.in.

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High-temperature, high-pressure applications that demand resistance to intergranular corrosion and thermal stress frequently use stainless steel 347 and 347H seamless pipes. They are perfect for high-temperature chemical processing equipment, boiler tubes, pressure vessels, superheaters, and heat exchangers. These pipes guarantee structural stability under constant heat exposure in the power generation, refinery, and aerospace industries. 347H is appropriate for steam piping and elevated temperature service because of its superior creep resistance due to its higher carbon content. They are a popular option in demanding industrial settings where performance is crucial due to their superior weldability and mechanical integrity.