stainless steel seamless pipe:304/304L, 316/316L, 321, 310S, ... Hydraulic testing machine, ect.certificatesISO 9001, Manufacture License of Special Equipment P.R.C. and PED. The ... advantages make us do business successfully with customers from many countries, eg. UK, Russia, Mexico, Singapore, Turkey ... ect. and establish long-term cooperation. The qty for exporting is about 500 tons per month. If you ...