Home / Standards / GB/T 33966-2017 GB/T 33966-2017 Active Seamless abrasion-resistant steel pipes for mortar service 输送砂浆用耐磨无缝钢管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2017-07-12 Implementation 2018-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A