... steel,alloy steel etc. Product name:Brass forged ring, Brass and copper hot forging parts ,Forging shaft sleeve, alloy ... of manufacturing management experience, have the advanced production equipment and technology ,with 5 production lines. The main production ... Standards ASTM, ASME, AISI, API, UNI, DIN, SIS and EURONORMMachiningturning, milling, drilling, grinding, threading, CNC machining etc.Surface ...