... machines for punching process.5, One Hot-forging machine6,2 sets of Vibration bolishing machines,Welding machine and annealing machine.7, ... Salt spray test machine8,2 sets of Assembly line About inspection equipments1, Callipers,2,Micrometers3,Height ... gages,Depth gages.4, thread gages,ring threads gages with many sizes,NPT,NPTF,BSPP,BSPT,NH ...