carbon steel or low alloy steel casting; more than ten years experience with one engineer team; high quality/competitive price Material:Carbon steel,low alloy steel:ZG20SiMn,ZG50Mn,ZG35SiMn,ZG35CrMo,ZG35SiMnMo,ZG42CrMo,ZG40Cr,ZG34CrNiMo,ZG40Mn and so on.Process:Place a pattern in sand to create a mold; Incorporate a gating system; Remove the pattern;Fill the mold cavity with molten metal;Allow ...