huateng guoji,dajiaoting Beijing, Beijing
We are a company specializing in producing various seamless steel pipes. For many years, we have been devoted to technical innovation and improvement of product quality. passed the ISO9001:2000 international quality system certification 2004 API 5l US ...
seamless steel pipe, seamless steel tube, carbon steel, pipe, tube, weld pipe, welded, seamless carbon steel, seamless pipe, black lacquer, varnish coating, galvanized
