Home / Standards / GB/T 30312-2025 GB/T 30312-2025 Active Test method for thermal shrinkage of dipped yarns and cords 浸胶纱线、线绳和帘线热收缩试验方法 Standard Type GBT ICS 83.140.99 CCS G47 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A