Stainless Steel 321 and 321H EFW Pipes

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Stainless Steel 321 and 321H EFW Pipes Manufacturer, Supplier and Exporter in Kuala lumpur, Malaysia

Maria Pipes and Tubes, Kuala Lumpur, Malaysia, is a trustworthy producer and exporter of **Stainless Steel 321 and 321H EFW Pipes** (Electric Fusion Welded Pipes). Our 321 and 321H EFW pipes are engineered to provide outstanding performance in high-temperature and corrosive conditions and are manufactured using fine raw materials and the latest welding techniques. These titanium-stabilized stainless steel tubes provide very good resistance to intergranular corrosion and oxidation. With an emphasis on quality and adherence to international standards, Maria Pipes and Tubes supplies a diverse group of industries, from chemical processing to aerospace, oil and gas, and power generation.

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**321 and 321H EFW Stainless Steel Pipes** are titanium-stabilized austenitic stainless steels that resist carbide precipitation upon welding and thus are resistant to intergranular corrosion. The pipes have 17–20% chromium, 9–13% nickel, and extra titanium (at least five times the carbon level). Grade 321H contains more carbon (0.04–0.10%) than 321 and offers greater strength and creep resistance at high temperatures. Physical and mechanical properties consist of a tensile strength of approximately 485 MPa, yield strength of 170 MPa, and elongation of 35%. The EFW process assures regular weld integrity and uniform wall thickness over larger diameters.

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 Maria Pipes and Tubes?

Choosing Stainless Steel 321 and 321H EFW Pipes from Maria 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 Kuala lumpur, Malaysia

Maria Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H EFW Pipes in Kuala lumpur, Malaysia, 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 Maria Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@mariapipes.com.

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**Stainless Steel 321 and 321H EFW Pipes** are extensively used in high-temperature applications where resistance to thermal fatigue and oxidation is vital. General applications are heat exchangers, furnace components, superheaters, exhaust systems, pressure vessels, and chemical processing equipment. The titanium stabilizing provides structural integrity following welding, whereas 321H is specifically designed for high-temperature and high-pressure environments like reactors and boilers. These EFW pipes provide safe performance, low maintenance, and long service life, thereby becoming a perfect option for industries under extreme thermal and corrosive operating conditions.