Home / Standards / GB/T 31937-2015 GB/T 31937-2015 Active SAWL steel pipe for pipeline of coal slurry 煤浆输送用直缝埋弧焊钢管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2015-09-11 Implementation 2016-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会