Steel CNC machine part material: alloy steel, stainless steel, carbon steel Steel CNC machine part We are Shijiazhuang Zhongrun Casting &Forging Co.,Ltd. ... . Our company have iron foundry,heat treatment plants,steel plants,machine shop,and CNC maching workshop,we are specializing in ... ,machinery accessory,forging ball,flame cutting,food machinery,auto part,manhole cover,etc. If you have free, please ...