- +86 13931792766
- Cangzhou, Hebei Province, China
Steel butt-weld concentric reducers are designed for the smooth transition between pipes of different diameters. They are suitable for vertical piping, pump outlets, and process systems requiring axial alignment.
Manufactured with advanced CNC equipment and proven processes, our flanges, pipe bends, and fittings deliver accurate dimensions, stable sealing performance, and dependable installation across demanding industrial applications.
Standards: GB/T 12459-2025, GB/T 13401-2025; ASME B16.9-2024 applies to export projects.
Structure/Dimensions: Concentric reducer; specify large-end and small-end diameters, wall thicknesses for both ends, and overall length; ASME B16.9 covers NPS 1/2–48 (DN15–1200), with wall thickness determined by the connected piping’s Schedule (Sch) or design thickness.
Connection: Butt-weld; bevel type and root face dimensions to be confirmed based on welding procedures and project specifications.
Material: Carbon steel, stainless steel, or alloy steel; material grade, seamless/welded type, heat treatment, and non-destructive testing (NDT) requirements must be clearly specified during the inquiry.
Pressure Rating: Butt-weld fittings typically do not carry a standalone “Class” rating; pressure-bearing capacity is determined by material, wall thickness, temperature, and applicable piping design codes.
Ordering/Acceptance: Confirm NPS/DN, end diameters, wall thickness/Schedule, structural dimensions, seamless/welded type, material grade, heat treatment, bevel details, and NDT requirements; pressure-bearing capacity is verified based on material, wall thickness, temperature, and piping design codes.
