Home / Standards / GB/T 46230-2025 GB/T 46230-2025 Active Solution-polymerized SBR—Evaluation methods of viscoelastic properties 溶液聚合丁苯橡胶 黏弹性能评价方法 Standard Type GBT ICS 83.060 CCS G35 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