Stainless Steel 321 and 321H EFW Pipes

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

David Pipes and Tubes is a reputable manufacturer and supplier of stainless steel 321/321H EFW (Electric Fusion Welded) pipes, proudly based in Canberra, Australia. They specialize in crafting high-quality welded pipes that are designed to offer outstanding corrosion resistance, impressive high-temperature performance, and long-lasting durability, even in tough industrial settings. The stainless steel 321/321H EFW pipes are stabilized with titanium, which helps prevent carbide precipitation during welding or when exposed to high temperatures for extended periods. With a commitment to precision manufacturing and strict compliance with international standards, David Pipes and Tubes provides reliable 321/321H EFW 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 a tensile strength ranging from 515 to 700 MPa, yield strength between 205 and 275 MPa, elongation of 35–40%, and a hardness rating below 90 HRB. Thanks to the titanium stabilization, these pipes offer excellent resistance to intergranular corrosion, oxidation, and thermal fatigue, making them well-suited for high-temperature and corrosive environments. The EFW process ensures consistent welds, structural integrity, and precise dimensions.

Stainless Steel 321 and 321H EFW Pipes Specification

Specification	ASTM A358 / ASME SA358
Specification	A / SA358 CLASS 1, A / SA358 CLASS 2, A / SA358 CLASS 3, A / SA358 CLASS 4, A / SA358 CLASS 5
Grades	304, 304L, 304H, 309S, 310S, 316, 316L, 316H, 317L, 321, 321H, 347, 347H, 904L ETC.
Type	EFW, ELECTRIC FUSION WELDED
Outer Diameter Size	Electric Fusion Welded / ERW- 8″ NB To 110″ NB (Nominal Bore Size)
Wall Thickness	Schedule 10 To Schedule 160 (3 mm to 100 mm Thickness)
Length	01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
Ends	Plain Ends / Beveled Ends
Delivery Conditions	As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered
Coating	Electropolish, Mechanical Polish, Satin Finish, Passivated
Dimension	All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME
Value Added Services	Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
Packaging	Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
Material Test Certificate	Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

Equivalent Grades for Stainless Steel 321 and 321H EFW 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

321 and 321H Stainless Steel EFW 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 EFW 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 EFW pipes from David Pipes and Tubes?

Choosing Stainless Steel 321 and 321H EFW 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 EFW pipes Supplier in Canberra, Australia

David Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H EFW 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.

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321 and 321H Stainless Steel EFW Pipe Sizes

NPS Designator	Outside Diameter		Nominal Wall Thickness
	in.	mm	Schedule 5SA		Schedule 10SA		Schedule 40SA		Schedule 80SA
	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm
8	8.625	219.08	0.109	2.77	0.148	3.76	0.322	8.18	0.500	12.70
10	10.750	273.05	0.134	3.40	0.165	4.19	0.365	9.27	0.500B	12.70B
12	12.750	323.85	0.156	3.96	0.180	4.57	0.375B	9.52B	0.500B	12.70B
14	14.000	355.60	0.156	3.96	0.188B	4.78B	…	…	…	…
16	16.000	406.40	0.165	4.19	0.188B	4.78B	…	…	…	…
18	18.000	457.20	0.165	4.19	0.188B	4.78B	…	…	…	…
20	20.000	508.00	0.188	4.78	0.188B	4.78B	…	…	…	…
22	22.000	558.80	0.188	4.78	0.218B	5.54B	…	…	…	…
24	24.000	609.60	0.218	5.54	0.250	6.35	…	…	…	…
30	30.000	762.00	0.250	6.35	0.312	7.92	…	…	…	…

Types of Stainless Steel 321 and 321H EFW Pipes

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

We offer custom sizes for Stainless Steel 321 and 321H EFW 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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Stainless steel 321/321H EFW pipes find extensive use in heat exchangers, boilers, furnace components, exhaust systems, and chemical process lines, where high-temperature stability and corrosion resistance are essential. They are particularly ideal for chemical plants, refineries, power stations, and other industrial applications that demand reliable, leak-proof piping solutions. The combination of titanium stabilization, welded construction, and superior alloy characteristics guarantees long-term durability, low maintenance, and dependable performance in even the most challenging industrial operations.