Stainless Steel 347347H Pipe Fittings

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Stainless Steel 347347H Pipe Fittings Specification

Bend Radius
Long / Short Radius (for Elbows)

Tensile Strength
515 MPa min

Diameter
12.7 mm to 609.6 mm

Thread Type
NPT / BSP (for threaded types)

Tolerance
0.5 mm

Flexibility
Rigid

Sealing Type
Metal to Metal, Gasket (as per type)

Connection Type
Welded / Threaded / Flanged

Yield Strength
205 MPa min

Temperature Range
-196C to 870C

Coating Type
Uncoated / Custom Coating on Request

Product Type
Pipe Fittings

Material
Stainless Steel 347 / 347H

Connection
Butt Weld / Socket Weld / Threaded

Shape
Elbow, Tee, Reducer, Cap, Stub End, etc.

Standard
ASTM A403, ASME SA403

Surface Treatment
Polished / Pickled / Annealed

Outer Diameter
1/2 NB to 24 NB (Custom sizes available)

Section Shape
Round

Length
Custom / As per Standard

Thickness
Sch 10S to Sch XXS

Color
Silver

Usage
Piping & Plumbing Systems

Rated Pressure
Class 150 to 2500

Application
Oil & Gas, Petrochemical, Power Plants, Chemical Industry

Material Grade
SS 347, SS 347H

About Stainless Steel 347347H Pipe Fittings

What Are Specification Stainless Steel 347/347H Pipe Fittings?

Standards :	ASTM, ASME
Designation :	A 403, SA 403
Dimension Standard :	ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Grade :	Stainless Steel 304L Buttweld Pipe Fittings, SS 304L Butt weld
Type :	Seamless, Welded
Thickness :	Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Size :	1/2" to 24"
Two Joint / Two Halve 304 Butt weld Fittings Size :	6" to 48"
Types of Butt weld Fittings :	Equal Tee, Nipple, Long Radius Elbow, Reducing Tee, Elbows, Swage Nipple, Short Radius Elbow, Reducer, Barrel Nipple, 90 Deg Elbow, Concentric Reducer, Reducing Nipple, 45 Deg Elbows, Eccentric Reducer, Bend, 180 Deg Elbow, End Cap, 1D Elbow, 3D Elbow, Stubend, 5D Elbow, Cap, Piggable Bend, Long Stubend, Tee, Short Stubend, Long Radius Bend

Equivalent material Of Stainless Steel 347/347H Pipe Fittings?

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

Chemical Composition Of Stainless Steel 347/347H Pipe Fittings?

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

Mechanical Properties Of Stainless Steel 347/347H Pipe Fittings?

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1454 C (2650 F)	Psi 75000 , MPa 515	Psi 30000 , MPa 205	35 %

High-Temperature Performance

SS 347/347H pipe fittings maintain structural integrity in temperatures ranging from -196C to 870C. Their excellent heat resistance and robust composition ensure prolonged functionality under extreme conditions, making them suitable for power generation, refineries, and high-temperature process lines.

Versatile Connection Options

These fittings are available with a variety of connection types, including butt weld, socket weld, threaded (NPT/BSP), and flanged ends. This versatility allows seamless integration into diverse piping networks, supporting custom or standard requirements in industrial applications.

Comprehensive Quality Assurance

All fittings undergo strict solution annealing and can be produced through hot or cold forming. Enhanced with third-party inspections, these products offer consistent reliability, meeting global export standards and custom packing solutions to ensure safe and convenient delivery.

FAQs of Stainless Steel 347347H Pipe Fittings:

Q: How are Stainless Steel 347/347H pipe fittings manufactured?

A: These fittings are produced using hot or cold forming processes, followed by solution annealing heat treatment. This combination enhances their mechanical strength and corrosion resistance, ensuring superior performance in demanding environments.

Q: What industries typically use SS 347/347H fittings?

A: SS 347/347H pipe fittings are widely used in oil & gas, petrochemical, chemical, and power plant industries. Their exceptional high-temperature and corrosion-resistant properties make them ideal for critical piping systems in these sectors.

Q: When should I opt for SS 347H fittings over SS 347?

A: SS 347H contains higher carbon content than SS 347, providing improved high-temperature strength. Choose SS 347H when your application involves sustained service at elevated temperatures, such as heat exchangers or furnace parts.

Q: Where can I source custom-sized stainless steel 347/347H pipe fittings?

A: Custom sizes and shapes can be sourced directly from exporters, manufacturers, suppliers, and traders based in India. Many offer a wide diameter range (12.7 mm to 609.6 mm) and custom lengths to meet specific project requirements.

Q: What are the benefits of using seamless or welded SS 347/347H fittings?

A: Seamless fittings deliver superior strength and uniformity, suitable for pressure-critical services, while welded fittings offer cost efficiency and flexibility for large-diameter or complex systems. Both types retain excellent corrosion and temperature resistance.

Q: How is the quality of these fittings ensured before delivery?

A: Each fitting is subjected to rigorous quality checks, including third-party inspection and testing per ASTM/ASME standards. Solution annealing, surface treatments, and precise dimensional control guarantee consistent quality and reliable performance.

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