Home / Standards / GB/T 26500-2025 GB/T 26500-2025 Active Structure, main size and basic parameters of steel pipes and fitting lined with plastic 塑料衬里复合钢管和管件结构型式、主要尺寸及基本参数 Standard Type GBT ICS 71.120;83.140 CCS G94 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A