Material: Cast iron, ductile iron, carbon steel, stainless steel. Dimention:DN40-DN1200mm,1.5"-48" standards:GB, DIN, ANSI, BS, AS, JIS, ISO, MSN, API, KS etc. High quality and No.1 after-sale service get our valves good markets nearly every parts of the world Acquirement of TUV CE0036&ISO9002 and SGS ISO9001 certificates makes Huihua set up a full set of Quality Managing System