... - ductile iron 60-45-18 process - sand casting process condition - raw casting OEM service boiler parts1) Materials: grey iron, ... ) Processes: sand casting process, investment casting process (silicon soil process and water glass process), die casting process, permanent mold casting, forged parts,5 ... 86-411-83701520Fax:+86-411-83704610Contact: Catherine Chen Machining and casting boiler parts foundry