Stainless Steel 321 and 321H ERW Pipes

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

Rithav Pipes and Tubes, located in Delhi, India, stands out as a top manufacturer and supplier of Stainless Steel 321 and 321H ERW Pipes, designed for outstanding performance in high-temperature and corrosive environments. Grade 321 is a titanium-stabilized austenitic stainless steel that effectively prevents intergranular corrosion during welding, while 321H, with its higher carbon content, offers improved creep strength at elevated temperatures. Following ASTM A312 standards, Rithav’s ERW (Electric Resistance Welded) pipes boast remarkable dimensional accuracy, strong weld integrity, and a long lifespan. These pipes are essential in industries like petrochemical, aerospace, thermal, and chemical processing.

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Stainless Steel 321 and 321H ERW Pipes consist of 17–19% chromium, 9–12% nickel, and titanium (≥5xC%) for stabilization. The 321H grade includes 0.04–0.10% carbon, enhancing its high-temperature strength. These ERW pipes excel in resisting intergranular corrosion, oxidation, and thermal fatigue. Their mechanical properties feature a tensile strength of ≥515 MPa, yield strength of ≥205 MPa, elongation of ≥35%, and a Brinell hardness of around 200 HB. These characteristics guarantee durability and performance even under extreme pressure and temperature conditions.

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 Rithav Pipes and Tubes?

Choosing Stainless Steel 321 and 321H ERW Pipes from Rithav 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 Delhi, India

Rithav Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H ERW Pipes in Delhi, 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 Rithav Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@rithavpipesandtubes.co.in.

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Stainless Steel 321 and 321H ERW Pipes find extensive use in chemical plants, refineries, heat exchanger systems, exhaust ducts, and aerospace applications, thanks to their excellent weldability and resistance to high temperatures. Grade 321 is perfect for welded components where post-weld annealing isn’t an option, while 321H is ideal for high-pressure, high-heat settings like boiler tubes, superheaters, and thermal processing lines. Their ability to resist oxidation, scaling, and intergranular corrosion ensures a long service life, even under severe thermal cycling. These pipes play a vital role in various critical applications.