Home / Standards / GB/T 33930-2017 GB/T 33930-2017 Active High-pressure rolling mill for mine—Restore specifications of extrusion roll 矿用高压辊磨机 挤压辊修复规范 Standard Type GBT ICS 73.120 CCS D94 Status 现行 Issue Date 2017-07-12 Implementation 2018-02-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A