The ASTM A234 WP22 LR 90° Elbow is a heavy-duty "Chrome-Moly" fitting used in high-temperature power generation and chemical processing. Containing 2.25% Chromium and 1% Molybdenum, it provides exceptional creep-rupture strength and resistance to hydrogen attack at elevated temperatures. The Long Radius (LR) design ensures a smooth $1.5D$ flow path to reduce turbulence. Its Butt Welding (BW) ends allow for permanent, high-integrity joints in high-pressure steam and refinery piping.
Technical Attributes: ASTM A234 WP22 LR 90° Elbow
Material Grade,ASTM A234 WP22 (2.25% Cr - 1% Mo)
Fitting Type,90 Degree Long Radius (LR) Elbow
Center-to-End Dim,1.5× Nominal Pipe Size (1.5D)
Manufacturing Std,ASME B16.9 / MSS SP-75
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per ASME B16.25
Size Range,1/2" to 48" (DN15 - DN1200)"
Wall Thickness,"SCH 40, SCH 80 (XS), SCH 160, SCH XXS"
Chromium Content,1.90%–2.60%
Molybdenum Content,0.87%–1.13%
Heat Treatment,Annealed / Normalized and Tempered
Tensile Strength,≥415 MPa (60 ksi)
Yield Strength,≥205 MPa (30 ksi)
Hardness,≤197 HBW
Testing Standard,"Hydrostatic, UT, MT, RT (Optional)"
Surface Treatment,Anti-rust Oil / Transparent Coating
Traceability,Heat Number Hard Stamped
Certification,EN 10204 3.1 / MTR
Applicable Service,"High-Pressure Steam, Refineries, Power Plants"
Contact: Jorge Yang
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