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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 16405-2025 |
Acoustics - Measurement of Insertion Loss of Duct mufflers in the Absence of Airflow - Simple Laboratory Method {译} 声学-管道消声器无气流下插入损失测量-实验室简易法 |
China National Standards muff |
 English PDF |
| GB/T 4498.1-2025 |
Rubber - Determination of ash content - Part 1: muffle furnace method {译} 橡胶-灰分的测定-第1部分：马弗炉法 |
China National Standards muff |
English PDF |
| GB/T 43073-2023 |
Pneumatics - Test method for measuring sound pressure levels of exhaust mufflers {译} 气动 测量排气消声器声压级的试验方法 |
China National Standards muff |
English PDF |
| GB/T 41318-2022 |
Ventilation muffler {译} 通风消声器 |
China National Standards muff |
English PDF |
| GB/T 4498.1-2013 |
Rubber—Determination of ash—Part 1: muffle furnace method 橡胶 灰分的测定 第1部分：马弗炉法 |
China National Standards muff |
English PDF |
| GB/T 7584.3-2011 |
Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture 声学 护听器 第3部分：使用专用声学测试装置 测量耳罩式护听器的插入损失 |
China National Standards muff |
English PDF |
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