... &ERW) 2.WT:STD,XS,XXS,SCH10-SCH160 3.Material:CS,SS,ALLOY STEEL 4.ISO a860 wphy-52 elbow pipe ... . Standard: ANSI B16.9, DIN, JIS, GOST17375, EN10253-1, EN10253-25. Certification: ISO9001:20086. Third party inspection: BV, SGS, TUV or ... by clients ASME B16.9/ASME B16.28/ASME B16.25/ASME B16.49 A234 WPB/A420 WPL3/WPL6/A860 WPHY ...