See general parameters: GB/T2965 GJB1538 GJB2218/ASTM B348 ASTM B381/JIS H4650 JIS H4657/OCT1 90000 TY1-92-2-72/TA1, TA2 TC4, TC6 TC11, TC18/Gr.1, Gr.2, Gr .5/JIS1, JIS2/BT1-00 BT1-0 BT6, BT20 BT22