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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 39385-2020 |
Plastics piping and ducting systems—Thermoplastics pipes—Determination of ring flexibility 塑料管道系统 热塑性塑料管材 环柔性的测定 |
China National Standards pipes—Determination |
 English PDF |
| GB/T 32378-2015 |
Glass-reinforced thermosetting plastics (GRP) pipes—Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions 玻璃纤维增强热固性塑料（GRP）管 湿态环境下长期极限弯曲应变和长期极限相对环变形的测定 |
China National Standards pipes—Determination |
English PDF |
| GB/T 9647-2015 |
Thermoplastics pipes—Determination of ring stiffness 热塑性塑料管材 环刚度的测定 |
China National Standards pipes—Determination |
English PDF |
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