Reducer Pipe Fittings

Pipe Reducer Manufacturer & Exporter

‘Ecostain Rainbow’ is a Top manufacturer and exporter of reducer pipe fitting in India. We are specialised in manufacturing Concentric Pipe Reducers and Eccentric Pipe Reducers in Carbon Steel, Stainless Steel, Duplex Steel, Alloy Steel material and also in special alloys such as Monel, Inconel, Hastelloy. We produce reducer pipe fitting according to international manufacturing and material grade standards such as ASTM/ANSI/ASME/BS/EN/DIN/JIS/IS for high temperature, low temperature and corrosion resistant applications. We offer seamless reducer pipe fitting from 1/2 inch to 24 inch and erw, welded and fabricated pipe reducer from 1/2 inch to 48 inch in diameter, with variations based on specific requirements to accommodate diverse piping systems demand. Our reducer pipe fitting are equipped with different end connections to facilitate their installation and connection to the piping system, butt weld ends, socket weld ends, and threaded ends, which allow the Reducer’s to be welded, soldered, or threaded onto the pipes.



  • Concentric Reducer: It reduces the pipe's diameter with a symmetrical center line.
  • Eccentric Reducer: It reduces the pipe's diameter with an offset center line, ideal for horizontal piping with gas flow.
  • Butt Weld Reducer: A pipe fitting that uses butt welding to connect and smoothly reduce pipe diameter.
  • Socket Weld Reducer: Fitting with sockets on both ends for joining pipes of different sizes using socket welding.
  • Threaded Reducer: Reduces pipe diameter with threaded ends for screwing into pipes.


Reducer pipe fitting with standard sizes and materials are readily available in stock for immediate delivery. Looking for large diameter Pipe Reducers? Contact us today for Customized Pipe Fittings. Reducer pipe fittings are very essential components for efficiency of piping system and for the seamless fitting between two pipes of different diameters. Reducers play a vital role in reducing the size of a pipeline to fit into a smaller space or accommodating varying flow requirements and maintaining the integrity and functionality of any piping systems. With their precise engineering and compatibility with various materials, reducer pipe fitting contribute significantly to the smooth operation of industrial processes across sectors such as oil and gas, chemical, power generation, food and beverage, construction and it’s designed to reduce the flow capacity or change the size of the pipe bore.

Reducer pipe



Reducer pipe



Reducer pipe


Types of Reducer Pipe Fitting we Offer:


Concentric Reducer:

  • Symmetrical Design: Concentric reducers feature a design where the center lines of both ends are aligned, resulting in a symmetrical reduction in diameter.
  • Maintains Constant Flow Velocity: Due to their symmetrical design, concentric reducers ensure that the fluid maintains a constant velocity throughout the reduction process, minimizing pressure drop.
  • Ideal for Liquid Systems: They are commonly used in applications where maintaining a consistent flow rate and minimizing turbulence is crucial, such as liquid piping systems.

Eccentric Reducer:

  • Asymmetrical Design: Eccentric reducers have an offset centerline between the two ends, resulting in an asymmetrical reduction in diameter.
  • Prevents Trapping of Air or Vapors: The offset design of eccentric reducers helps prevent the trapping of air or vapors in the piping system, making them suitable for drainage or venting applications.
  • Used in High Flow Systems: They are often used in systems with high flow rates or where drainage is necessary, such as in sewage systems or pipelines carrying slurries.

Manufacturing Standards:

We adhere to stringent quality and manufacturing standards to ensure the reliability and performance of our pipe fittings.

  • ASTM A234: Specification for pipe fittings of wrought carbon steel and alloy steel for moderate and high-temperature service.
  • ASTM A403: Standard specification for wrought austenitic stainless steel piping fittings.
  • ASTM A420: Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service.
  • ANSI/ASME B16.9: Standard for factory-made wrought butt-weld fittings.
  • MSS SP-43: Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications.
  • BS EN 10253: European standard for butt-welding pipe fittings.
  • IS 1239: Indian Standard for Mild Steel Pipe Fittings.

Applications of Tee Pipe Fittings:

  • Pipeline engineering
  • Oil and gas refineries
  • Petrochemical plants
  • Chemical processing plants
  • Marine Industry
  • Waste water Treatment Plants
  • Water Supply Systems
  • Fire Protection Systems
  • Power industry
  • Aerospace Industry
  • Food processing industry and many more.

Our Production Range-

Buttweld Elbow Specifications
Outer diameter Seamless pipe fittings (1/2″~24″), ERW / Welded / Fabricated Elbow (1/2″~48″)
Wall Thickness 3mm – 40mm / SCH3, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Special Services Hot Dipped Galvanizing, Epoxy & FBE Coating, Electro Polish, Sand Blasting, Threading, Soldering
Material Grades Stainless Steel, Alloy Steel, Duplex, Nickel Alloys, Low temperature Steel, Carbon Steel, Cupro Nickel


Buttweld Elbow Manufacturing Standards

Material Grades: Stainless Steel, Alloy Steel, Duplex, Nickel Alloys, Low temperature Steel, Carbon Steel, Cupro Nickel

Material Grades
ASME ANSI B16.9, ANSI B16.25, ANSI B16.28, ASTM A403, ASME SA403, MSS-SP-43
DIN DIN2605, DIN2615, DIN2616, DIN2617, DIN28011.
EN EN10253-1, EN10253-2
Stainless Steel Elbow ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Carbon Steel Elbow ASTM A 234 WPB, WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70
Low Temperature Carbon Steel Elbow ASTM A420 WPL3, A420 WPL6
Alloy Steel Elbow ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91
Duplex Steel Elbow ASTM A 815, ASME SA 815 UNS NO S31803, S32205. Werkstoff No. 1.4462
Nickel Alloy Elbow ASTM / ASME SB 336 UNS 2200 ( NICKEL 200 ), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS n10276 ( HASTELLOY C 276 )


Forged Elbow Specifications & Forged Elbow Material Grades

Material Grades
Pressure Class 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Dimension Specifications ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Sizes 1/8″- 4″ (DN6~DN100)
Manufacturing Standards ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91
Stainless Steel ASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L, ASTM A312/A403 TP304, TP304L, TP316, TP316L The material for forged stainless Elbow conforms to ASME A182 The dimensions for forged stainless steel Elbow conform to ASME B16.11
Carbon Steel ASTM A105, A350 LF2, A106 Gr.B, A234 WPB The material for forged carbon steel Elbow conforms to the requirements of ASTM/ASME A105/SA105 The dimensions for forged carbon steel Elbow conform to ASME B16.11.



We regularly export our products to



With decades of experience in the industry, 'Ecostain Rainbow Engineering Exports’ witnessed the critical importance of utilizing high-quality Pipes fittings that meet international standards. Whether you are in Oil and Gas, petrochemical, power generation, or any other industry relying on efficient and reliable piping systems, investing in high quality valves is essential. Don't compromise on safety, performance, or longevity. Partner with trusted suppliers like us ‘Ecostain Rainbow Engineering Exports’, who prioritize quality and adherence to standards, ensuring your projects are built to last.

Contact us today to explore our full range of industrial valves, pipe fittings, pipes & tubes, flanges and experience the excellence of our products and how we can support your piping needs with our expertise and premium-grade valves. Let's build a robust infrastructure together.






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