... :Q195, Q235A, Q235B, Q345, ASTM A53/106, ASTMA500, ST375.Standards:GB/T3091-2001, GB/T9711.1-1997, GBT8162, GBT8163, GBT3087 ... , API 5L 6.Applications:civil construction, petrochemical industry, light industry, mainly ... steel pipes can be supplied according to GB, ASTM, API, DIN, JIS standards, the factory is locating in \Development Zone, Caihezhuang ...