... ), X60 (L420), X65, X70Quenching and Tempering High Tensile Steel Plate: Standard: Special ConditionGrade: WH70Q, ... , normalizing, annealing, tempering, quenching, normalizing plus tempering, quenching and tempering, and other delivery states ... are available. Tests: HIC, SSC, SPWHT, Macrostructure, detection of defects, Hardness and DWTT test for pipelines steel ...