... ,A234WPB 4,ASMEB16.9 sizeSeamless:from 1/2" to 24"Welded:from 24" to 96"( or as customer requirements)angle22.5 deg ... ,,A234WPC,A420WPL6. 20#,Q235,10#,20#,A3, Q235A, 20G,16Mn, ect)Stainless steel(ASTM A403 WP304,304L,316,316L,321. 1Cr18Ni9Ti, 00Cr19Ni10 ... ,00Cr17Ni14Mo2, ect)Alloy steel(ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91,16MnR, Cr5Mo, 12Cr1MoV ...