Stainless Steel 347 / 347H Pipe Fittings Manufacturer

Global Steel manufactures, and supplies, Stainless Steel 347, 347H Pipe Fittings. These Fittings are made following all national and international quality standards. With our extensive range of fittings to suit customer specifications, we provide pipe fittings in a variety of forms, sizes, thicknesses, and standards.  

These SS 347 and 347H Pipe Fittings are divided into martensitic, ferritic, and austenitic varieties based on the crystalline structure. Our Pipe Fittings are capable of withstanding extreme temperatures, stress, and vibrations. These Pipe Fittings are provided to a variety of sectors, including pulp & paper, petroleum, gas, and pharmaceutical. Our 347 and 374H pipe fittings are made of corrosion-resistant high alloy steel. 347 Pipe Fittings because of the niobium concentration, equal tees are very resistant to intergranular corrosion.

The creep strength of 347H Stainless Steel Pipe Fittings is high pipe Fittings withstand moderate acidic and nitric solutions.  The inclusion of Tantalum and Columbium content makes it more exceptional for intergranular corrosion resistance. These pipes are non-magnetic and can be annealed and hardened by cold working. The alloy 347 stainless steel fittings provide good corrosion resistance, comparable to that of stainless steel 304. The alloy 347 was developed for use in high-temperature environments with chromium carbide precipitation.  

The maintenance of the quality of our SS 321 / 321H Pipe Fittings is our top priority, and to achieve that we have assigned a team of talented and ingenious field experts, who follow a special quality assurance plan. First, the raw material brought in from reputed vendors is inspected, then it is put through many quality checks during production, etc. Several Tests are undertaken to ensure proper service performance, and this is followed by a non-destructive test, where the fully assembled Pipe Fittings are checked for any defects.

What chemicals are compatible with stainless steel 347H pipe fittings?

Stainless steel 347H pipe fittings are highly corrosion-resistant to various chemicals, acids, and alkalis. They have excellent resistance to organic acids, such as acetic acid and formic acid, and are also resistant to many inorganic acids, including sulfuric acid, hydrochloric acid, and nitric acid. Additionally, they have good resistance to alkaline solutions, such as sodium hydroxide and potassium hydroxide. Before usage, compatibility with certain chemicals should be confirmed using industry standards and chemical compatibility charts.

What is the difference between stainless steel 347 and 347H pipe fittings?

Stainless steel 347 and 347H pipe fittings are both austenitic stainless steel variants used in high-temperature applications. The main difference between the two is the carbon content. Stainless steel 347 contains 0.08% carbon, while 347H contains more carbon, typically around 0.04-0.10%. This higher carbon content improves the high-temperature strength of the material. Therefore, 347H is preferred for applications with critical high-temperature strength and creep resistance.

Can stainless steel 347H pipe fittings be used in cryogenic applications?

Yes, stainless steel 347H pipe fittings can be used in cryogenic applications, which involve very low temperatures below -150°C (-238°F). However, the material’s low-temperature performance may not be as good as other austenitic stainless steels, such as 304L or 316L. It is essential to select the appropriate material and ensure proper design and installation to prevent thermal stress and embrittlement at low temperatures.

Specification of SS 347,347H Pipe Fittings

Standards ASTM A403 / ASME SA403
Dimensions ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10
  • Seamless Butt Weld Fittings : 1/2″ – 10″
  • Welded Butt Weld Fittings : 1/2″ – 48″
Type Seamless / Welded / Fabricated
Thickness SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Stainless Steel 347 / 347H Pipe Fittings

Equivalent Grades

SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H X6CrNiNb18-12

Manufacturing Standards

ASME B16.9 ASTM A403 WP347 Fittings Factory-Made Wrought Buttwelding FittingsLong Radius Elbows, Long Radius Reducing Elbows, Long Radius Returns, Short Radius Elbows, Short Radius 180-deg Rerurns, 3D elbows, Straight Tees, Straight Crosses, Reducing Outlet Tees, Reducing Outlet
Crosses, Lap Joint Stub Ends, Caps, Reducers
ASME B16.28 Short Radius Elbows, Short Radius 180-deg Returns
MSS SP43Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant ApplicationsLong Radius Elbows, Straight and Reducing-on-the-Outlet Tees, Lap Joint Stub ends, caps, long radius 180 Degree returns, concentric reducers, eccentric reducers
Mss SP75 Long Radius Elbows, 3R elbows, straight tees, reducing outlet tees, caps, reducers

Different Types

Buttweld Elbow

SS 347,347H Pipe Elbow

Butt weld Tee

SS 347,347H Pipe Tee

Butt weld Cross

SS 347,347H Pipe Cross


SS 347,347H Reducers

Buttweld Pipe Cap

SS 347,347H Pipe Cap

Buttweld Stubends

SS 347,347H Stub End

Contact us to get a quick quote for your requirement.

We offer These Stainless Steel 347/347H Buttweld Pipe Fittings as per DIN, ISO, JIS or ANSI Standard.

Available Stock

  • UNS S34709 Stainless Steel 2D Elbow
  • Grade 347 Stainless Steel Pipe Fittings
  • 347 SS Pipe Fittings
  • Stainless Steel 347 Lap Joint Stub Ends
  • ASME B16.28 SS 347 Two Joint Pipe Fittings
  • ASTM A403 WP 347H Stainless Steel Lateral Tee
  • 347 SS Two Halve Butt weld Fittings
  • Stainless Steel 347H 45° Short Radius Elbow
  • 347 Stainless Steel 1D Elbow
  • INOX 347H Buttweld Pipe Fittings
  • Type 347H SS Industrial Buttweld Fittings
  • SS 347H 3D Elbow
  • 347H Stainless Steel Pipe Fittings
  • SS 347H Reducers
  • UNS S34700 Buttweld Fittings
  • Stainless Steel 347 Pipe Reducing Tee
  • SS 347H Butt weld Elbow
  • ANSI B16.9 Stainless Steel 347 Pipe Caps
  • Stainless Steel 347H Buttweld Pipe Nipple
  • Stainless Steel 347 180° Buttweld Elbow
  • Stainless Steel 347 Buttweld Elbow
  • SS 347H Pipe Cross Suppliers
  • Stainless Steel 347H Concentric Reducer
  • Stainless Steel 347H Pipe Bends
  • SS 347 Buttweld Pipe Fittings
  • Dimensions SS 347 Butt Weld Elbows 90°-SR- ASME B16.9
  • SS 347H Pipe Fittings
  • Stainless Steel 347 Reducing Elbow
  • SS 1.4961 Two Joint Pipe Fittings
  • Austenitic Stainless Steel 347H 45 Degree Pipe Elbow
  • SS 347 90° LR Elbow
  • 347 SS Stub End
  • Stainless Steel 347H Butt weld Fittings
  • SS 347 Eccentric Reducer
  • ANSI B16.28 347H SS Seamless Pipe Fittings

Dimensional Tolerances

1/2 TO 2-1/2+1/16±1/32Not less than 87-1/2% of Normal Thickness±1/16±1/16±1/8±1/4±1/4±1/3212 to 41/321/16


5 to 81/161/8
3 TO 3-1/2±1/16±1/16±1/16±1/16±1/8±1/4±1/4±1/3210 to 123/323/16
4±1/16±1/16±1/16±1/16±1/8±1/4±1/4±1/3214 to 163/321/4
5 TO 8+1/32±1/16±1/16±1/16±1/4±1/4±1/4±1/3218 to 241/83/8


10 TO 18+1/16±1/8±3/32±3/32±1/4±3/8±1/4±1/16 All dimensions are in inches 


20 TO 24+1/4±3/32±3/32±3/32±1/4±3/8±1/4±1/16


Chemical Structure

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

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 %

We Serve Application Industry

Application Industry

Butt weld Pipe Fittings applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.

Oil & Gas Industry

Petrochemical Industry

Power Generation Industry

Chemical Industry

We Export Stainless Steel 347,347H Pipe Fittings Across the Globe

Thailand, Belarus, Afghanistan, Angola, Poland, Nigeria, Ireland, Peru, Bolivia, Indonesia, Mexico, Switzerland, Serbia, Libya, Azerbaijan, Estonia, Netherlands, China, Kuwait, Philippines, Chile, Bahrain, South Africa, Israel, Egypt, Algeria, Nepal, Lithuania, Trinidad & Tobago, Ecuador, Iran, Morocco, Qatar, Italy, Venezuela, Iraq, Brazil, Jordan, Ghana, Poland, Finland, Argentina, Sweden, Taiwan, Australia, Norway, Saudi Arabia, United Kingdom, Pakistan, United States, South Korea, Slovakia, New Zealand, Macau, Puerto Rico, Czech Republic, Turkey, Colombia, Austria, Lebanon, Oman, Zimbabwe, Japan, Nigeria, Sri Lanka, Tunisia, Hungary, Kenya, Tibet, Bangladesh, Spain, Hong Kong, Portugal, Gambia, Romania, Ukraine, France, Mongolia, Canada, Denmark, Bhutan, Singapore, Kazakhstan, Gabon, Belgium, Chile, United Arab Emirates, Vietnam, Greece, Yemen, India, Bulgaria, Mexico, Germany, Namibia, Russia, Iran, Croatia, Costa Rica, Malaysia.

Domestic Supply Stainless Steel 347,347H Pipe Fittings

Atyrau, Al Khobar, Pune, Melbourne, Kuala Lumpur, Hong Kong, Secunderabad, Edmonton, Hyderabad, Noida, Istanbul, Dallas, Busan, Ankara, Petaling Jaya, Milan, Perth, Seoul, Santiago, Dubai, Karachi, Nagpur, Cairo, Riyadh, Ludhiana, Gurgaon, Gimhae-si, Ho Chi Minh City, Jakarta, Vadodara, Chennai, Thane, Manama, Caracas, Faridabad, Doha, Moscow, Granada, Los Angeles, Ahvaz, Al Jubail, Vung Tau, Dammam, Visakhapatnam, Nashik, Haryana, Howrah, New Delhi, Jamshedpur, Singapore, Tehran, Chandigarh, Kolkata, Lahore, Ernakulam, Bengaluru, Sydney, Kuwait City, Bhopal, Abu Dhabi, Madrid, Aberdeen, Colombo, Montreal, Mumbai, Indore, Coimbatore, Bogota, Navi Mumbai, London, Lagos, Toronto, Courbevoie, Algiers, Brisbane, Ranchi, Jeddah, Pimpri-Chinchwad, Mexico City, Ulsan, Kanpur, Bangkok, Ahmedabad, Rio de Janeiro, Sharjah, Jaipur, Rajkot, Calgary, Geoje-si, Thiruvananthapuram, Port-of-Spain, La Victoria, New York, Chiyoda, Houston, Surat, Hanoi, Muscat, Baroda.
Global Steelindia

Global Steel is a significant manufacturer and exporter of all ferrous and non-ferrous metals. As a pioneer and leader in the industry, Global Steel is at the forefront of technology and research.

Quick Contact

Shop No.6, Sonarika Bldg, 25/C, Chandawadi, Cawasji Patel Tank, Mumbai, Maharashtra 400004