The ASME B16.9 Seamless Concentric Reducer is a precision-engineered fitting used to join pipes of different diameters on a shared centerline. Manufactured without longitudinal welds, it ensures maximum pressure integrity and uniform wall thickness. Its conical shape allows for a smooth transition of fluid velocity, making it ideal for vertical piping or pump suctions where avoiding air pockets is secondary to maintaining flow symmetry. It is the gold standard for high-pressure oil, gas, and chemical systems.
Technical Attributes: ASME B16.9 Seamless Concentric Reducer
Design Standard,ASME B16.9 (Factory-Made Fittings)
Fitting Type,Concentric Reducer (Shared Centerline)
Manufacturing,Seamless (No Welded Seams)
Material Grades,"ASTM A234 WPB, WP11, WP22, A420 WPL6"
Size Range,1/2"×1/4" to 24""×20" (Seamless)
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per ASME B16.25
Wall Thickness,SCH 10 to SCH XXS (Matches Pipe)
Manufacturing Process,Cold Forming or Hot Extrusion
Heat Treatment,Normalizing / Quenching & Tempering
Tensile Strength,≥415 MPa (For A234 WPB)
Yield Strength,≥240 MPa (For A234 WPB)
Pressure Rating,Same as Seamless Pipe of identical Schedule
Testing Standard,"Hydrostatic, UT, MT, Dimensional"
Dimensional Tolerance,Per ASME B16.9 (Length & Alignment)
Surface Finish,Black Paint / Anti-rust Oil / Galvanized
Certification,EN 10204 3.1 / MTR
Traceability,Hard Stamped Heat Number & Grade
Applications,"Petrochemical, Power, Oil & Gas Transmission"
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
