http://21goods.net.cn/Gravity-Die-Casting/KeyWords Directory,All Keywords Directory Gravity Die Casting http://www.dongruncasting.com/Capabilities/Gravity_Die_Casting.htmThe process is suitable for less quantity and high quality aluminium castings,  the surface is better than sand casting. The material of permanent mold is steel, the mold is pre-heated up to 200℃ before the aluminum alloy is poured into the cavity......Fri, 22 May 2009 10:01:34 GMT