... of pipe:3-18m 3.certificate: API 5L & ISO Product nameSpiral submerged arc welding steel pipeStandardAPI 5L, GB ... /T9711,GradeQ235,Q345,B,X42,X52,X60,X65,X70applicationAs conveyer pipe in ... pipe API5L API 5L, EN-10208, GB9711.1/2, ISO A, B, X42, X46, X52, X56, X60, X65, X70SSAW ... 1/2, GB9711.1/2, ISO3.Steel grade: A, B, X42, X46, X52, X56, X60, X65, X704.Specification ...