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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 5989-2023 |
Refractories - Test method for softening temperature under load (differential heating method) {译} 耐火材料 荷重软化温度试验方法(示差升温法) |
China National Standards test method softening |
 English PDF |
| GB/T 4507-2014 |
Standard test method for softening point of bitumen―Ring-and-ball apparatus 沥青软化点测定法 环球法 |
China National Standards test method softening |
English PDF |
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