... ,sch20,sch30,sch40,STD,sch60, XS,sch80,sch100, sch140,sch160,XXSPackagingBundle ... shipbuilding, construction, steel structure; city piping system etc.Min Order QuantityAccording to customer's ... departments has a production department, quality inspection department, accounting department, technology development, ... hardness tester / Eddy current testing / X-ray detection 3. With more than a strong ...