2011 Certrifugal Single-stage Casting Water Pump Body 2. Material: Grey iron GJS450-10 3. Process: sand ... metal processing, finishes and heat treatment Product weight: 0.5 to 300kg Precision machining: CNC lathes, milling, drilling, planning, grinding ... range: pipes and its fittings, grating, frame, manhole covers, pump parts, handwheel, valve, flange, bollard, pilingaccessories, counterweight iron, ...