galvanized coupling for custom-made parts. We have 100 set of CNC ... volume orders. The main products including fittings,nozzles,sparyers,galvanized coupling... Our dedication, plus the company's knowledge and experience,have ... and 100mm with tolerance of +/-0.02mm. 4) Main processes: groove, milling, grinding, drilling, threading, broaching and knurling. Turning, Drilling, Polishing5 ...