Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 40919-2021 |
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 |
China National Standards systems—Determination |
English PDF |
GB/T 40937-2021 |
Plastic piping systems—Determination of long-term strength for plastic composite pipes and fittings 塑料管道系统 塑料复合管材和管件长期强度的测定方法 |
China National Standards systems—Determination |
English PDF |
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