... Prompt delivery and small order accepted 4.High Precision investment casting Detail Description of investment casting : Casting processMaterailInvestment castingASTMA148class80-40, ASTMA148Class80-50A572GR60, AISI316 stainless ... , turning ,finish machining.3.Major product:precision machined copper parts,sand casting,investment castings,forged casting,copper gear & worms, standard screwed connection ...