Home / Standards / GB/T 21835-2008 GB/T 21835-2008 Abolished Dimensions and masses per unit length of welded steel pipes 焊接钢管尺寸及单位长度重量 Standard Type GBT ICS 77.140.75 CCS H48 Status 废止 Issue Date 2008-05-13 Implementation 2008-11-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A