... TS16949 and ISO9001: 2000, SGS. material:GG15, GG20, GG30 casting iron pump impeller we can manufacture kinds of casting products as ... .andard: JIS, DIN, ASTM,BS 4. OEM service Qingdao Jowon Mechanical and Electrical Co., Ltd. offers production and operation of casting ... , please email us the drawing or send sample to us. cast iron pump impeller