Home / Standards / GB/T 31330-2014 GB/T 31330-2014 Active The performance test procedures of recirculating ball power steering lips seals  汽车循环球式动力转向器唇形密封圈性能试验方法 Standard Type GBT ICS 83.140.50 CCS G43 Status 现行 Issue Date 2014-12-05 Implementation 2015-06-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A