Stainless Steel 347 / 347H Buttweld Fittings Manufacturer and Supplier In Cape Town, South Africa

Khuliso Fittings is a well-respected manufacturer and supplier located in Cape Town, South Africa, specializing in top-notch Stainless Steel 347 / 347H Buttweld Fittings. These fittings are designed to provide outstanding resistance to corrosion, oxidation, and intergranular attack, especially in high-temperature settings. The Stainless Steel 347 is stabilized with niobium, which helps prevent carbide precipitation, while the 347H variant, with its higher carbon content, offers enhanced tensile and creep strength when exposed to elevated temperatures. Khuliso Fittings is committed to delivering precision-engineered products that adhere to international standards, catering to industries like petrochemical, power generation, chemical processing, and aerospace, and providing robust and dependable piping solutions for challenging applications.

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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

The Stainless Steel 347 / 347H Buttweld Fittings consist of about 17–19% chromium, 9–13% nickel, and niobium for stabilization, with carbon levels reaching up to 0.08% in 347 and between 0.04–0.10% in 347H. This specific composition ensures excellent high-temperature strength, oxidation resistance, and stability during welding. The fittings boast a tensile strength of approximately 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. They are known for their great weldability, toughness, and durability, making them perfect for use in high-temperature and corrosive environments.

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 Cape Town, South Africa

Khuliso Fittings is a leading supplier of Stainless Steel 347 Buttweld Fittings in Cape Town, South Africa. 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 Khuliso Fittings?

Stainless Steel 347 Buttweld Fittings from Khuliso 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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Stainless steel 347 and 347H Buttweld Fittings provide excellent resistance to intergranular corrosion, making them ideal for high temperature applications These alloys contain columbium and tantalum to stabilize the material and prevent carbide precipitation during welding. They are highly resistant to oxidation, providing long-term durability under extreme conditions. Stainless steel 347 provides excellent woldability and is suitable for applications in industries such as aerospace, chemical processing, and electrical equipment. The high-carbon 347H variant provides good strength at high temperatures, making it ideal for high-pressure environments.

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 Khuliso Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@khulisofittings.co.za.

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Application Industry of Stainless Steel 347 / 347H Buttweld Fittings

Stainless Steel 347 / 347H Buttweld Fittings are commonly utilized in applications that demand high resistance to corrosion and oxidation at elevated temperatures. Typical uses include boiler and superheater tubes, heat exchangers, furnace components, chemical processing equipment, and petrochemical piping systems. They are also well-suited for power plants, refineries, and thermal processing units that undergo significant thermal cycling. The combination of high-temperature strength, corrosion resistance, and structural stability guarantees reliable performance and a long service life in demanding industrial settings.