Home / Standards / GB/T 29913.1-2013 GB/T 29913.1-2013 Abolished Bearing steel for wind power equipment - Part 1: Yawing and variable pitch bearing steel 风力发电设备用轴承钢 第1部分：偏航、变桨轴承用钢 Standard Type GBT ICS 77.140.20 CCS H40 Status 废止 Issue Date 2013-09-27 Implementation 2014-08-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A