Home / Standards / GB 22448-2025 GB 22448-2025 Upcoming Non-destructive testing instruments—Protection rules for industrial X-ray radiographic equipment below 500kV 无损检测仪器 500kV以下工业X射线探伤机防护规则 Standard Type GB ICS 19.100 CCS N78 Status 即将实施 Issue Date 2025-08-01 Implementation 2026-08-01 Responsible Dept 工业和信息化部 Drafting Unit N/A