... -1200 2)PN:1.0/1.6MPa 3)ISO9001:2008, 27/93 EC 4)Established in 1987 Double ... produce gate, globe, check, ball and butterfly valves with the materials of ductile iron, carbon steel, alloy steel ... order. Our products are designed and manufactured in accordance with the standards of GB, ASME, ANSI, API, BS ... ISO, ISO 9001, SAI Global Watermark, ABS (Design Assessment Certificates), API 6D, CE/PED for many ...