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Astm Wp22-s 1/2-32 inch XXS thick seamless alloy steel pipe hot rolled steel ASME SA335 P5 Alloy Steel Pipes Chemical Composition: Grade Alloy P5 C 0.05-0.15 Cr 4.00-6.00 Mn 0.30-0.60 Mo 0.45-0.65 P 0...