... , Brass, and customized material from clients.Material GradeASTM, DIN, GB, BS, JIS, AISI, NF, etcProcessSand Casting,Weight1kg- 500kgToleranceCT 6 ... technology specification,surface treatment,quantity, special requirements and etc) Q 3.How about quality of your castings parts? After ... hardened in a drying chamber where they are exposed to air.Step 5: AutoclaveAfter the layers have been formed and dried ...