X70 steel plate:HIC, SSC, SPWHT, Macrostructure, detection of defects,Hardness ... .1 are available. Pipeline steel plate are rolled according to API standard,used to fabricate large diameter welded pipes which transport ... GRADEAPI 5L PLS1 / PLS2 X52,X56,X60,X65,X70,X80 API 5L PLS1 / PLS2 X70 steel plate pipeline steel plate mild steel plate ...