... &ERW) 2.WT:STD,XS,XXS,SCH10-SCH160 3.Material:CS,SS,ALLOY STEEL 4.ISO a860 wphy-52 elbow pipe ... , WP316/316L/316H, WP321, WP347/347HSTANDARDANSI B16.9, ANSI B16.28, DIN2605/2615/2616/2617, JIS2311/2312/2313, GOST17375/17376/17378 ... inspection company arranged by clients ASME B16.9/ASME B16.28/ASME B16.25/ASME B16.49 A234 WPB/A420 WPL3 ...