Home / Standards / GB/T 20971-2007 GB/T 20971-2007 Active Petroleum and natural gas industries - Equipment for well cementing - Performance testing of cementing float equipment 石油天然气工业 固井设备 注水泥浮动装置性能测试 Standard Type GBT ICS 75.180.10 CCS E92 Status 现行 Issue Date 2007-06-25 Implementation 2007-11-01 Responsible Dept 中国石油天然气集团公司 Drafting Unit N/A