... GBT/9711.2 EN10217,EN10219 1.Commodity NameERW carbon steel pipe / line pipe2.Standard,ASTMA252, ASTM A53, API 5L1,5L2, API 5CT ... requirements10.MaterialQ235B,Q345B,X46,X52,X60,X70,X80 etc11.UsageFor line pipe in petroleum and natural gas , water and gas, mineral slurry ... PSL1,PSL2 , API 5CT, ISO ,CE1.Commodity NameERW carbon steel pipe / line pipe2.Standard,ASTMA252, ASTM A53, API 5L1,5L2, API 5CT ...