Stainless Steel 321 and 321H ERW Pipes

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Stainless Steel 321 and 321H ERW Pipes Manufacturer, Supplier and Exporter in Chennai, India

Premium-grade Stainless Steel 321 and 321H ERW Pipes are manufactured and supplied by Vipul Pipes and Tubes, a reputable brand in stainless steel piping solutions with headquarters in Chennai, India. Electric Resistance Welding (ERW) technology is used in the engineering of these pipes to ensure dimensional accuracy, consistent strength, and precise weld seams. While 321H offers a higher carbon content for improved high-temperature strength, SS 321 is stabilized with titanium for resistance to intergranular corrosion after welding. Our 321/321H ERW pipes are perfect for thermal processing, chemical handling, and power generation firms that demand exceptional durability and long-lasting performance because they are made to withstand harsh conditions.

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Stainless Steel 321 and 321H ERW Pipes are austenitic stainless steels stabilized with titanium. They are composed of titanium (at least five times the carbon content), nickel (9–12%), and chromium (17–19%). For better creep and high-temperature strength, SS 321H contains more carbon (0.04–0.10%). Excellent resistance to oxidation and intergranular corrosion is provided by both grades. Mechanical characteristics include good elongation (40%) and a yield strength of 205 MPa and a tensile strength of approximately 515 MPa. These pipes are appropriate for pressure and structural applications in high-temperature settings because the ERW process produces clean, consistent welds.

Stainless Steel 321 and 321H ERW Pipes Specification

Specifications : ASTM A312 / ASME SA312

Dimensions : ASTM, ASME and API

Size : 8″ NB to 24″ NB

Wall Thickness : 0.5 to 150mm Thick

Schedules : SCH 5S, 10S,10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS

Length : Single Random, Double Random & Required Length

Form : Round, Square, Rectangular, Hydraulic Pipes

End : Plain end, Bevelled end

Type : Electric Resistance Welded

321 and 321H Stainless Steel ERW Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	5(C+N) – 0.70 max
SS 321H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	4(C+N) – 0.70 max

SS 321 and 321H ERW Pipes Mechanical Properties

Tensile Strength	Yield Strength (0.2%Offset)	Elongation	Hardness
			Rockwell B (HR B) max	Brinell (HB) max
Psi – 75000, MPa – 515	Psi – 30000, MPa – 205	35 %	95	217

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 Stainless Steel 321 and 321H ERW Pipes from Vipul Pipes and Tubes?

Choosing Stainless Steel 321 and 321H ERW Pipes from Vipul Pipes and Tubes 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 Stainless Steel 321 and 321H ERW Pipes Supplier in Chennai, India

Vipul Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H ERW 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.

Equivalent Grades for SS 321 and 321H ERW Pipes

STANDARD	UNS	WERKSTOFF NR.	EN	JIS
SS 321	S32100	1.4541	X6CrNiTi18-10	SUS 321
SS 321H	S32109	1.4878	X12CrNiTi18-9	SUS 321H

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Types of Stainless Steel 321 and 321H ERW Pipes

Are Custom Sizes Available for Stainless Steel 321 and 321H ERW Pipes?

We offer custom sizes for Stainless Steel 321 and 321H ERW 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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Applications requiring exceptional resistance to heat and oxidation, particularly in situations where post-weld annealing is impractical, frequently use stainless steel 321 and 321H ERW pipes. Aerospace, chemical processing, power generation, and petroleum refining are examples of common industries. Heat exchangers, furnace components, exhaust manifolds, pressure vessels, and high-temperature ducting systems all use these pipes. For welded equipment subjected to temperatures as high as 900°C, SS 321 is the recommended material, whereas 321H is best suited for prolonged exposure to high temperatures. They are appropriate for demanding settings needing long-term durability and mechanical dependability because of their stability, strength, and resistance to corrosion.