... single parts must at least 5 inspection process before delivery. 4,Most Economic production process for cost saving. 5,Material recycle ... which value US$300,000.00 for custom-made fittings .4,20 sets of punching machines for punching process.5, One ... inspection equipments1, Callipers,2,Micrometers3,Height gages,Depth gages.4, thread gages,ring threads gages with many sizes,NPT,NPTF,BSPP,BSPT ...