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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 34877.4-2024 |
Industrial fans-Determination of sound power level of fans under standard laboratory conditions-Part 4: Sound intensity method {译} 工业风机-标准实验室条件下风机声功率级的测定-第4部分：声强法 |
China National Standards Industrial fans Determination |
 English PDF |
| GB/T 34877.2-2023 |
Industrial fans - Determination of fan sound power levels under standard laboratory conditions - Part 2: Reverberation chamber method {译} 工业风机 标准实验室条件下风机声功率级的测定 第2部分：混响室法 |
China National Standards Industrial fans Determination |
English PDF |
| GB/T 34877.1-2023 |
Industrial fans - Determination of fan sound power levels under standard laboratory conditions - Part 1: General requirements {译} 工业风机 标准实验室条件下风机声功率级的测定 第1部分：通用要求 |
China National Standards Industrial fans Determination |
English PDF |
| GB/T 34877.3-2017 |
Industrial fans—Determination of fan sound power levels under standardized laboratory conditions—Part3:Enveloping surface methods 工业风机 标准实验室条件下风机声功率级的测定 第3部分：包络面法 |
China National Standards Industrial fans Determination |
English PDF |
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