Home / Standards / GB/T 40919-2021 GB/T 40919-2021 Active Polyethylene materials for piping systems—Determination of Strain Hardening Modulus in relation to slow crack growth 管道系统用聚乙烯材料 与慢速裂纹增长相关的应变硬化模量的测定 Standard Type GBT ICS 83.140.30 CCS G33 Status 现行 Issue Date 2021-11-26 Implementation 2022-06-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A