... &superior quality 2advanced equipment&skilled worker 3strict QC OEM precision butterfly valve body casting1:OEM service available2:Material: aluminum,grey iron, ... ASTM,, JIS, DIN, GB4:Weight Range: 0.1kg-2000kg5:Process Type: sand casting, investment casting,water glass casting,high temperature resistance ... .comTel: 0086-411-83701520Fax:0086-411-83704610 OEM precision butterfly valve body casitng