Home / Standards / GB/T 21538-2026 GB/T 21538-2026 Upcoming Rubber roller for metal sheet coating 金属薄板用涂覆胶辊 Standard Type GBT ICS 83.140.99 CCS G 47 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-09-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A