Home / Standards / GB/T 32970-2016 GB/T 32970-2016 Active Longitudinal submerged-arc welded steel pipe for high pressure service at high temperatures 高温高压管道用直缝埋弧焊接钢管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2016-08-29 Implementation 2017-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A