Stainless Steel 347 / 347H Buttweld Fittings Manufacturer and Supplier in Kolkata, India

Devang Fittings is a well-known manufacturer and supplier of Stainless Steel 347 / 347H Buttweld Fittings in Kolkata, India, providing quality fittings designed for exceptional performance in high-temperature and corrosive conditions. These fittings are made to exacting industrial standards and find extensive application in piping systems where heat and intergranular corrosion resistance is utmost. With an eye to precision, longevity, and customer satisfaction, Devang Fittings provides a complete range of elbows, tees, reducers, and other buttweld fittings to industries like petrochemical, power generation, oil and gas, and chemical processing with consistent and timely solutions.

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Stainless Steel 347 / 347H Buttweld Fittings Specification

Specifications	ASME SA403 / ASTM A403
Dimension Standard	ASME/ANSI B16.9, MSS-SP-43/SP-79, ASME B16.28, ASME B16.25, ASME B16.49
Standard Size Range	1/2” NB TO 48” NB. (Fabricated, Seamless and 100% X-Ray Welded)
Manufacturing Type	Fabricated / Seamless / Welded / ERW
Bending Radius	R=1D, 2D, 3D, 5D, 6D, 8D, 10D, or Custom
Wall Thickness / Schedule	SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS / 3mm – 40mm
End Connection	Butt Weld
Melting Point	1400-1450°C for (WP317)
Outside Diameter (OD)	Seamless / Buttweld Fitting ( 1/2″～48″), ERW / Welded / Fabricated Buttweld Fitting (1/2″～48″)
Value Added Services	Hot Dipped Galvanizing, Electro Polish, Sand Blasting, Epoxy & FBE Coating, Threading, Soldering
Other Standards	MSS SP-75, ISO, SNSI, JIS, DIN, GB, DIN2617, JISB2311, JISB2312, JISB2313 / T12459GB / T13401, SH3408, SH3409HG / T21635HG / T21631SY / T05010
Material Test Certificates (MTC)	As per EN 10204 3.2 and EN 10204 3.1, Certifying NACE MR0175, NACE MR0103
Materials	AISI 317
Two Halve / Two Joint Buttweld Fittings Size	6″ to 48″
Manufacturing Specification	ASME: ANSI B16.9, ANSI B16.28, ASME B16.25, MSS-SP-43, DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, EN: EN10253-1, EN10253-2
A403 SS Seamless Fittings	Size: 15 NB to 300 NB \| Sch.& Swg: Sch.5 to Sch.XXs
A403 SS Welded Fittings	Size: 15 NB to 600 NB \| Sch.& Swg: Sch.5 to Sch.80s

Stainless Steel 347 / 347H Buttweld Fittings are stabilized austenitic stainless steels possessing principal alloying elements of 17–19% chromium, 9–13% nickel, and columbium (niobium) for enhanced intergranular corrosion resistance. 347H Grade has greater carbon (0.04–0.10%) for improved creep strength at high temperatures. These fittings have a minimum tensile strength of 515 MPa, a minimum yield strength of 205 MPa, and elongation good enough. The material has superior mechanical properties at high temperatures and better oxidation and corrosion resistance, and it is well suited for welded environments exposed to thermal cycling and severe chemical exposure.

Stainless Steel 347 / 347H Buttweld Fittings Chemical Composition

Element	C	Cr	Mn	Ni	P	S	Si	Cb/Ta
SS 347	0.08 max	min: 17.0 max: 20.0	2.0 max	min: 9.0 max: 13.0	0.04 max	0.30 max	0.75 max	min:10x C max: 1.0
SS 347H	min: 0.04 max: 0.10	min: 17.0 max: 20.0	2.0 max	min: 9.0 max: 13.0	0.03 max	0.30 max	0.75 max	min:10x C max: 1.0

Stainless Steel 347 / 347H Buttweld Fittings Mechanical Properties

Grade	Tensile Strength ksi (MPa) min	Yield Strength 0.2% ksi offset ksi (MPa) min	Elongation (% in 50mm) min	Hardness (Brinell) MAX	Hardness (Rockwell B) MAX
347/347H	75 (515)	30 (205)	40	201	95

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Largest Stainless Steel 347 / 347H Buttweld Fittings Supplier in Kolkata, India

Devang Fittings is a leading supplier of Stainless Steel 347 Buttweld Fittings in Kolkata, India. We offer an extensive range of Stainless Steel 347H Buttweld Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

If You Are Looking To Buy High Quality

Stainless Steel 347 / 347H Buttweld Fittings Equivalent Grade

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

Why Choose Stainless Steel 347 / 347H Buttweld Fittings from Devang Fittings?

Stainless Steel 347 Buttweld Fittings from Devang Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.

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Types of Stainless Steel 347 / 347H Buttweld Fittings

Stainless Steel 347 / 347H Buttweld Fittings Dimensions Chart

Nominal Pipe Size (inches)	Outside Diameter		45°Elbows		90° Elbows		180° Returns
	Outside Diameter		Long Radius		Long Radius	Short Radius	Long Radius
	(mm)	(inches)	Center to Face (inches)	Radius (inches)	Center to Face (inches)	Center to Face (inches)	Center to Center (inches)	Back to face (inches)
1	33.4	1.315	7/8		1 1/2	1	3	2 3/16
1/2	21.3	0.840	5/8		1 1/2	–	2	1 7/8
3/4	26.7	1.050	7/16		1 1/8	–	2 1/4	1 11/16
1 1/4	42.2	1.660	1		1 7/8	1 1/4	3 3/4	2 3/4
1 1/2	48.3	1.900	1 1/8	3	2 1/4	1 1/2	4 1/2	3 1/4
2	60.3	2.375	1 3/8	4	3	2	6	4 3/16
2 1/2	73.0	2.875	1 3/4	5	3 3/4	2 1/2	7 1/2	5 3/16
3	88.9	3.500	2	6	4 1/2	3	9	6 1/4
3 1/2	101.6	4.000	2 1/4	7	5 1/4	3 1/2	10 1/2	7 1/4
4	114.3	4.500	2 1/2	8	6	4	12	8 1/4
5	141.3	5.563	3 1/8	10	7 1/2	5	15	10 5/16
6	168.3	6.625	3 3/4	12	9	6	18	12 5/16
8	219.1	8.625	5	12	12	8	24	16 5/16
10	273.1	10.750	6 1/4	15	15	10	30	20 3/8
12	323.9	12.750	7 1/2	18	18	12	36	24 3/8

Are Custom Sizes Available for Stainless Steel 347 / 347H Buttweld Fittings?

Yes, custom sizes for Stainless Steel 347 / 347H Buttweld Fittings are available at Devang Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@devangfittings.co.in.

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Application Industry of Stainless Steel 347 / 347H Buttweld Fittings

Stainless Steel 347 / 347H Buttweld Fittings are extensively utilized in high-pressure and high-temperature processes because of their high resistance to intergranular corrosion and oxidation. Used frequently in petrochemical and refinery plants, power generation plants, and heat exchanger systems, these fittings provide long-term performance in thermal-cycling environments. These fittings can be used in superheater and reheater components in boilers, exhaust ducts, and reactor vessels. Their weldability and mechanical strength at high temperatures make them the best option for demanding applications where consistent performance under thermal and mechanical stress is required.