... .Process: sand casting 3.Professional casting equipment ASTM A126 casting machining Detail:1). ASTM 8620, ASTM 8630 casting machining part are smooth, well ... ). Material Available: Ductile iron QT450, ASTM A536 65-45.12, ASTM 8620, ASTM 8630, ASTM A148 grade 90-60, ASTM A216 70-36 grade WCB ...