http://www.dk-metals.com/casting/ China Casting suppliers Sand casting has existed as a technology for thousands of years and is the preferred metal casting process for the production of shaped parts weighing from less than one pound to several thousand pounds. Due to the low tool cost, sand casting has versatility and cost-effectiveness even in small batches. Almost any part configuration made by other metal casting processes can be simplified into patterns and made into sand casting. In sand casting, the patterns of the required final parts including the metal conveying system (doors and risers) are made of hardwood, polyurethane,
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