Home / Standards / GB/T 37199.2-2018 GB/T 37199.2-2018 Active Plastics—Polybutene(PB) moulding and extrusion materials—Part 2：Preparation of test specimens and determination of properties 塑料 聚丁烯（PB）模塑和挤出材料 第2部分：试样制备和性能测定 Standard Type GBT ICS 83.080.20 CCS G31 Status 现行 Issue Date 2018-12-28 Implementation 2019-11-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A