The Carbon Steel Concentric Reducer is a butt weld fitting that transitions between two different pipe sizes while maintaining a common centerline. The reducer has a symmetrical taper — the center of the larger pipe aligns perfectly with the center of the smaller pipe. This fitting is intended for vertical pipelines or horizontal pipelines where air entrainment is not a concern. (For horizontal liquid lines where air pockets must be avoided, an eccentric reducer with flat top is used instead.) The fitting is manufactured from carbon steel to ASTM A234 WPB. Both ends are beveled per ASME B16.25 for butt welding to the larger and smaller pipes. The internal surface is smooth with no abrupt steps, minimizing turbulence and pressure drop.
Why Choose Us / Advantage
Full Traceability: Heat number stamped on each reducer.
100% Dimensional Inspection: Length and diameters checked to ASME B16.9.
Positive Material Identification Available: On request for critical projects.
Custom Sizes: Any inlet/outlet combination available.
Quick Lead Time: Standard size reducers in 15 days.
Technical Data
★ Material ASTM A234 WPB / WPC
★ Type Concentric (symmetrical)
★ Connection Butt weld (beveled both ends)
★ Pressure Sch10 – Sch160 / STD / XS / XXS
★ Size Range 3/4″ x 1/2″ – 48″ x 42″
★ Standard ASME B16.9 / MSS SP-75
★ Use Vertical lines only
★ Taper Uniform along length
Applications
● Vertical pump discharge lines
● Riser pipes (vertical transitions)
● Overhead pipeline drops
● Stack and exhaust systems (vertical)
● Gravity flow vertical drops
