... according to international standards 1. Tool part, material CS-7,steel investment casting, heat treatment to HRC50-55;2. Quality ... ,ASTMGermany DIN,VDG P690Japan JIS;7. We OEM stainless steel, carbon steel, alloy steel investment casting as per your drawings or samples;8. ... solution in terms of optimizing design of part, casting, machining, heat-treatment and finish so that our customers can cut ...