Buttweld Eccentric Reducers

Buttweld Eccentric Reducer | A234 WPB Carbon Steel Pipe Fittings

Fitting Type: Butt Weld Eccentric Reducer

Connections: Butt Weld Ends (ASME B16.25 Beveled)

Standards: ASME B16.9, GOST 17378

Material: ASTM A234 WPB Carbon Steel (Seamless), Stainless Steel, Alloy Steel

Butt Weld Eccentric Reducer | A234 WPB Carbon Steel Pipe Fittings

A buttweld eccentric reducer is a type of pipe fitting used to connect two pipes of different diameters while maintaining the same bottom line. Unlike concentric reducers, which are symmetrical, an eccentric reducer has an edge parallel to the connecting pipe, making it ideal for applications where air pockets or drainage are concerned.

Key Specifications

Fitting Type: Butt Weld Eccentric Reducer

Connections: Butt Weld Ends (ASME B16.25 Beveled)

Standards: ASME B16.9, GOST 17378

Material: ASTM A234 WPB Carbon Steel (Seamless), Stainless Steel, Alloy Steel

Technical Specifications

Specification	Details
Product Name	Butt Weld Eccentric Reducer
Size Range	1/2″ to 48″ (DN15 – DN1200); Larger sizes available
Wall Thickness	Sch 10, Sch 20, Sch 40 (STD), Sch 80 (XS), Sch 160, XXS (2mm-32mm)
Manufacturing	Seamless (up to 24″) & Welded (Large Diameter)
Surface Treatment	Black Paint, Anti-rust Oil, Galvanized, or Pickled

Material Grades Available

Carbon Steel: ASTM A234 WPB (Standard for high-temp), ASTM A420 WPL6 (Low-temp).
Stainless Steel: ASTM A403 WP304/304L, WP316/316L (Chemical/Water treatment).
Alloy Steel: ASTM A234 WP11, WP22, WP5, WP91 (High-pressure/High-temp).
Duplex Steel: ASTM A815 UNS S31803, S32205.

Comparison: Concentric vs. Eccentric Reducer

Concentric Reducer: Centerline remains consistent. Used when fluid flow is relatively uniform and pressure drop is minimized.

Eccentric Reducer: One side is flat (maintains bottom/top alignment), preventing cavitation. Ideal for constant flow or gravity feed.

Carbon steel Buttweld Concentric vs. Eccentric Reducers

Why Choose Our Butt Weld Eccentric Reducers?

Optimized for Pump Suction: Prevents air bubble accumulation, eliminating cavitation risks.
Robust Leak-Proof Connections: Butt weld bonds ensure structural integrity under high pressure and vibration.
Precision Beveling: Machine-beveled ends (ASME B16.25) ensure faster, cost-effective field welding.
Rigorous Quality Testing: Includes Hydrostatic testing, NDT (UT, RT, MT), and PMI material verification.

FAQ

Q: When should I use an Eccentric Reducer instead of a Concentric one?
A: Use in horizontal piping systems, specifically at the pump suction side to prevent air traps.

Q: Do you supply seamless eccentric reducers?
A: Yes, seamless up to 24 inches; larger diameters are welded with X-ray inspection.