Stainless Steel 321 and 321H ERW Pipes

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Stainless Steel 321 and 321H ERW Pipes Manufacturer, Supplier and Exporter in Canberra, Australia

David Pipes and Tubes is a reputable manufacturer and supplier of stainless steel 321/321H ERW (Electric Resistance Welded) pipes, proudly based in Canberra, Australia. They specialize in crafting high-quality welded pipes that excel in high-temperature environments, offering outstanding corrosion resistance and long-lasting durability for tough industrial settings. The stainless steel 321/321H ERW pipes are stabilized with titanium, which helps prevent carbide precipitation during welding or extended heat exposure, ensuring they maintain their structural integrity and provide reliable service. With a commitment to precision manufacturing and strict adherence to international standards, David Pipes and Tubes delivers 321/321H ERW pipes that are perfect for applications in chemical processing, petrochemicals, power generation, and instrumentation.

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These stainless steel pipes are made up of chromium (17–19%), nickel (9–13%), and titanium (0.3–0.8%), with the 321H variant featuring a higher carbon content for improved high-temperature strength. They boast impressive mechanical properties, including a tensile strength of 515–700 MPa, yield strength of 205–275 MPa, elongation of 35–40%, and hardness below 90 HRB. These characteristics provide excellent resistance to intergranular corrosion, oxidation, and thermal fatigue. The ERW process guarantees consistent weld quality, precise dimensions, and structural reliability for various industrial applications.

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 David Pipes and Tubes?

Choosing Stainless Steel 321 and 321H ERW Pipes from David 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 Canberra, Australia

David Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H ERW Pipes in Canberra, Australia, 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 David Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@davidpipes.com.

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You’ll find stainless steel 321/321H ERW pipes commonly used in heat exchangers, boilers, furnace components, exhaust systems, and chemical process lines, where high-temperature stability and corrosion resistance are essential. Their welded design makes installation straightforward, ensuring precise dimensional control and leak-proof performance. Thanks to the titanium stabilization, these pipes resist intergranular corrosion during welding or prolonged heat exposure, making them an ideal choice for chemical plants, refineries, power stations, and other industrial operations that demand durability, reliability, and a long service life.