The ASME B16.9 Stainless Steel Concentric Reducer is a high-strength fitting used to join pipes of different diameters on a common centerline. The XS (Extra Strong) wall thickness provides enhanced pressure resistance and structural rigidity. Forged from corrosion-resistant 304L or 316L, its conical design ensures a smooth flow transition, preventing turbulence and air pockets in vertical lines. Its butt-weld construction offers a permanent, leak-proof seal for high-pressure chemical and industrial systems.
Technical Attributes: Stainless Steel XS Concentric Reducer
Standard,ASME B16.9 / ANSI B16.9
Material Grades,"ASTM A403 WP304/L, WP316/L, WP321, WP347"
Fitting Type,Concentric Reducer (CR)
Wall Thickness,XS (Extra Strong)
Manufacturing,Seamless or Welded (WP-W / WP-WX)
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per ASME B16.25
Size Range,1/2"×1/4" to 48"×44"
Chromium Content,16.0%–20.0%
Nickel Content,8.0%–14.0%
Molybdenum (316L),2.0%–3.0%
Tensile Strength,≥485 MPa (70 ksi)
Yield Strength,≥170–205 MPa
Heat Treatment,Solution Annealing & Water Quenching
Testing Standard,"PMI, Radiographic, Hydrostatic, UT"
Surface Finish,"Pickled, Passivated, or Bead Blasted"
Hardness,≤187 HBW
Certification,EN 10204 3.1 / MTR
Primary Use,Vertical Pipeline Transitions
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