Duplex Steel Pipe Fittings Manufacturer

Global Steel is a prominent supplier and manufacturer of Duplex Steel Pipe Fittings. These fittings are built with high-quality materials and cutting-edge technologies. We take great care in making these instrumentation Fittings to ensure that they are of the highest quality to meet the needs of both domestic and international customers, and we provide them as required. Stainless Steel 310S Instrumentation Fittings come in a variety of diameters, finishes, lengths, and thicknesses. Our expert craftsmen adhere to all standards while making high-quality instrumentation Fittings.

The composition of Duplex Steel Pipe Fittings contains both ferrite and austenite. Duplex Stainless Steel solidifies from a liquid phase to a totally ferritic structure when melted. Approximately half of the material converts to an austenitic structure as it cools. As a result, the alloy has a microstructure that is around 50% austenite and 50% ferrite. Duplex alloys are tougher than ferritic alloys and have higher strength and stress corrosion cracking resistance than most austenitic alloys, especially at low temperatures. There are typically additional advantages to using Duplex Steel Pipe Fittings. Duplex grades have a higher thermal conductivity than austenitic equivalent grades due to their lower nickel content. To do the same task, less heat transfer surface area is required. Rapid cooling following heating to roughly 1100°C can be used for solution treatment or annealing.

Duplex Steel Pipe Fittings are used in a wide range of applications such as Chemical processes, Petrochemical, Oil & Gas, Pharmaceutical, Geothermal, Sea Water, Water Desalination, LNG (Liquefied Natural Gas), Biomass, Mining, Utilities, Nuclear Power, Solar Power, etc.

What material is used for duplex pipe fitting?

Duplex pipe fittings are commonly made from a family of stainless steel alloys known as duplex stainless steels. These alloys contain a mixture of austenite and ferrite phases in roughly equal proportions, providing high strength and corrosion resistance. Common duplex stainless steel grades used for pipe fittings include S31803 and S32205. These materials are used in various applications where resistance to corrosion and stress corrosion cracking is critical, such as in chemical processing, oil and gas, and marine industries.

What are the classification of duplex pipe fittings?

Duplex pipe fittings are categorized according to their form, size, and purpose. In addition to elbows, tees, reducers, flanges, and couplings, they also come in many other shapes. According on the technique used to attach them to the pipe, these fittings can be classified as either butt-welded or socket-welded. Socket-welded fittings are coupled with a socket or coupling, whereas butt-welded fittings are welded directly to the pipe. The maximum pressure that duplex pipe fittings are rated to take in a particular application allows for another classification of duplex pipe fittings. The type of end connection, the temperature range, and the composition of the material may also be utilized to categorize duplex pipe fittings

How do you connect Duplex steel pipe fittings?

The two primary procedures for joining duplex steel pipe fittings are butt and socket welding. Butt-welding involves welding the fitting directly to the pipe by heating both the fitting and the pipe to their melting points and allowing them to fuse. Socket welding, conversely, involves fitting the pipe into a socket or coupling and welding it in place. Both methods require careful preparation of the welded surfaces and strict adherence to welding parameters to ensure a strong, leak-free joint.

Specification of DSS Pipe Fittings

Standards ASTM A815 / ASME SA815
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
Duplex Steel Pipe Fittings

Manufacturing Standards of ASTM A815 Pipe Fittings

ASME B16.9 ASTM A815  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

DSS Pipe Elbow

Butt weld Tee

DSS Pipe Tee

Butt weld Cross

DSS Pipe Cross


DSS Reducers

Buttweld Pipe Cap

DSS Pipe Cap

Buttweld Stubends

DSS Stub End

Contact us to get a quick quote for your requirement.

We offer These Duplex Steel Buttweld Pipe Fittings as per DIN, ISO, JIS or ANSI Standard.

Available Stock

  • Duplex Steel Buttweld Pipe Fittings
  • Duplex Steel Lap Joint Stub Ends
  • Duplex Steel Pipe Fittings
  • Duplex Steel 45° Short Radius Elbow
  • INOX Duplex Steel Buttweld Pipe Fittings
  • Type DSS Industrial Buttweld Fittings
  • Duplex Butt weld Elbow
  • DSS Long Radius Elbow
  • DSS Seamless Pipe Fittings
  • ASTM A815 Duplex Steel Lateral Tee
  • Duplex Steel Pipe Reducing Tee
  • Duplex Steel Duplex Steel 2D Elbow
  • ASME B16.28 DSS Two Joint Pipe Fittings
  • Duplex Steel 1D Elbow
  • Duplex Steel Seamless Fittings
  • ANSI B16.9 Duplex Steel Pipe Caps
  • Duplex Stainless Steel Buttweld Fittings
  • Duplex Steel Buttweld Fittings
  • DSS Two Halve Butt weld Fittings
  • DSS Pipe Cross
  • Duplex Steel Butt weld Fittings
  • Duplex Steel 180° Buttweld Elbow
  • Duplex Steel 45 Degree Pipe Elbow
  • Duplex Steel Pipe Cap
  • DSS Reducing Tee
  • Duplex Pipe Fittings
  • Duplex Eccentric Reducer
  • Duplex Steel Pipe Bends
  • Duplex Steel Reducers
  • Duplex Two Joint Pipe Fittings
  • DSS Butt Weld Elbows 90°-SR- ASME B16.9
  • Duplex Stainless Steel Reducing Elbow
  • DSS 180° LR Return Bend
  • DSS Grade 90° Seamless Elbow
  • Duplex Steel Concentric Reducer
  • ANSI B16.28 DSS Seamless Pipe Fittings
  • Duplex Steel Buttweld Elbow
  • DSS Buttweld Pipe Fittings
  • Duplex Steel Buttweld Pipe Fittings
  • Duplex Steel Pipe Fittings
  • Duplex Steel Buttweld Pipe Nipple
  • DSS ANSI/ ASME B16.9 1.5d Elbow
  • DSS 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


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 Duplex Steel Pipe Fittings Across the Globe

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

Domestic Supply Duplex Steel Pipe Fittings

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