... Butt Weld Offeredpneumatic butterfly valvesProducts: We can produce gate, globe, check, ball and butterfly valves with the materials of ductile iron, carbon ... of GB, ASME, ANSI, API, BS, DIN, JIS etc. We can offer special standard valves to our clients on your request ... ISO, ISO 9001, SAI Global Watermark, ABS (Design Assessment Certificates), API 6D, CE/PED for many years and view the ISO 9001 ...