Stainless Steel 347 and 347H EFW Pipes

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Stainless Steel 347 and 347H EFW Pipes Manufacturer, Supplier and Exporter in Canberra, Australia

David Pipes and Tubes is a reputable manufacturer and supplier of stainless steel 347/347H EFW (Electric Fusion Welded) pipes, proudly based in Canberra, Australia. This company is all about crafting top-notch welded pipes that are designed to handle high temperatures, resist corrosion, and last for the long haul. The stainless steel 347/347H EFW pipes are stabilized with niobium, which helps prevent carbide precipitation during welding or when exposed to heat for extended periods. This means they offer fantastic resistance to intergranular corrosion and maintain their structural integrity. With cutting-edge manufacturing techniques and a commitment to international standards, David Pipes and Tubes delivers dependable 347/347H EFW pipes that are perfect for industries like petrochemical, chemical processing, power generation, and marine applications.

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These stainless steel 347/347H EFW pipes are made up of chromium (17–19%), nickel (9–13%), and niobium (0.5–1.0%), with the 347H variant featuring a higher carbon content to boost high-temperature strength. They boast impressive tensile strength ranging from 515 to 700 MPa, yield strength between 205 and 275 MPa, elongation of 35 to 40%, and a hardness rating below 90 HRB. The EFW process guarantees consistent welds, precise dimensions, and reliable structure, while the niobium stabilization enhances resistance to intergranular corrosion and creep at high temperatures.

Stainless Steel 347 and 347H 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 347 and 347H EFW Pipes

STANDARD	UNS	WERKSTOFF NR.	EN	JIS	GOST
SS 347	S34700	1.4550	X6CrNiNb18-10	SUS 347	08Ch18N12B
SS 347H	S34709	1.4961	X6CrNiNb18-12	SUS 347H	–

347 and 347H Stainless Steel EFW Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Cb	Ni	Fe
SS 347	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 20.00	10xC – 1.10	9.00 – 13.00	62.74 min
SS 347H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	8xC – 1.10	9.0 -13.0	63.72 min

SS 347 and 347H 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 %	92	201

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 347 and 347H EFW pipes from David Pipes and Tubes?

Choosing Stainless Steel 347 and 347H 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 347 and 347H EFW pipes Supplier in Canberra, Australia

David Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 347 and 347H 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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347 and 347H 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 347 and 347H EFW Pipes

Are Custom Sizes Available for Stainless Steel 347 and 347H EFW Pipes?

We offer custom sizes for Stainless Steel 347 and 347H 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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You’ll find stainless steel 347/347H EFW pipes commonly used in heat exchangers, boilers, furnace components, exhaust systems, and pressure vessels that operate in high-temperature and corrosive settings. Their welded design allows for accurate installation, leak-proof performance, and consistent structural integrity. Thanks to the combination of niobium stabilization, EFW construction, and excellent alloy properties, these pipes promise long-lasting durability, reliability, and minimal maintenance, making them a great choice for demanding industrial environments like chemical plants, refineries, power stations, and marine facilities.