Home / Standards / GB/T 19831.2-2008 GB/T 19831.2-2008 Active Petroleum and natural gas industries - Equipment for well cementing - Part 2: Centralizer placement and stop-collar testing 石油天然气工业 固井设备 第2部分：扶正器的放置和止动环测试 Standard Type GBT ICS 75.180.10 CCS E92 Status 现行 Issue Date 2008-08-28 Implementation 2009-03-01 Responsible Dept 国家标准委 Drafting Unit N/A