... ,We are specialize in produce all kinds of precision cnc non-standard machinery parts(nuts,bolts,fasteners,etc),our ... cast iron,ductile iron,grey iron,stainless steel,alloy steel,aluminum,aluminum alloy3 Standard ISO ASTM GB ASTM DIN JIS4 Process ... melting furnance,casting machines,drill machine,laser cutting lathes,CNC machines,grinding machines,punching lathes,mill machines7 Inspecton spectrum ...