... by customers needed Material is brass 1/4 NPT machining hole high quality with professional technical control 1.46 ... steel,copper ,brass.6. Equipment: 25-400ton punching machine, CNC machining, milling, turning, lathe cutting, planning machine, heat treatment machine, ... Finish: zinc plated, chromate plated, powder coating etc.8. Part can be supplied according to customers' drawings or samples.Rizhao ...