... STD, XS, XXS, SCH 10 ~ SCH 1604. Standard: ANSI B16.9, DIN, JIS, GOST17375, EN10253-1, EN10253-25. Certification: ISO9001:20086 ... WP304/304L/304H, WP316/316L/316H, WP321, WP347/347HSTANDARDANSI B16.9, ANSI B16.28, DIN2605/2615/2616/2617, JIS2311/2312/2313 ... or any other inspection company arranged by clients ASME B16.9/ASME B16.28/ASME B16.25/ASME B16.49 A234 ...