The ASME B16.9 Stainless Steel Eccentric Reducer is a precision fitting used to join pipes of different diameters while maintaining a flat side. This "offset" design is critical for horizontal pipelines to prevent the accumulation of air or gas (flat-on-top) or to allow for drainage (flat-on-bottom). Forged with XS (Extra Strong) walls in grades like 316L, it provides superior pressure resistance and corrosion protection, making it indispensable for pump suction lines and chemical process piping.
Technical Attributes: Stainless Steel XS Eccentric Reducer
Standard,ASME B16.9 / ANSI B16.9
Material Grades,"ASTM A403 WP304/L, WP316/L, WP321, WP347"
Fitting Type,Eccentric Reducer (ER)
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 Range1/2""×1/" 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,Horizontal Pipeline Transitions / Pump Suction
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