... .Material: Cast Iron,Carbon steel,Stainless Steel4.Operation: Hand wheel, gear, square head.5.Standard: GB,DIN,JIS,ANSI,BS.6 ... B16.10/ANSI B16.50Specification: 1.Drivign manner: Spur gear transmission,Bevel gear transmission,Air driving,Take pneumatically manually,Hydrodynamic driving,Electric driving ...