Home / Standards / GB/T 19831.1-2025 GB/T 19831.1-2025 Upcoming Petroleum and natural gas industreis—Casing centralizers—Part 1:Bow-spring casing centralizers 石油天然气工业 套管扶正器 第1部分:弓形弹簧套管扶正器 Standard Type GBT ICS 75.180.10 CCS E92 Status 即将实施 Issue Date 2025-12-02 Implementation 2026-07-01 Responsible Dept 国家标准委 Drafting Unit N/A