... . Standard: ANSI B16.9, DIN, JIS, GOST17375, EN10253-1, EN10253-25. Certification: ISO9001:20086. Third party inspection: BV, SGS, TUV or ... , EN1092-1:2007 PN6-PN400, GOST PN6-PN100MaterialCARBON STEELASTM A105/N, ASTM A350 LF1/ LF2/LF3, ASTM A694 F42/F46/F52 ... by clients ASME B16.9/ASME B16.28/ASME B16.25/ASME B16.49 A234 WPB/A420 WPL3/WPL6/A860 WPHY ...