We are the manufacturer of petroleum pipeline. And our product is up to the standard of API5L, API 5CT of American Petroleum Institute, the standard of ASTM A252, ASTM A53, and ASTM A500 of American Society Testing and Materials and standard of EN 10217 and EN10219 of the European Union and it is granted the certificate of national standard of GB/T9711.1, GB/T9711.2 of the People?s Republic of China and passes the International quality management system of ISO9001-2008.
