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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 31255-2014 |
Safety of machinery―Safety specification for the design of industrial type stairs, working platforms and walkways 机械安全 工业楼梯、工作平台和通道的安全设计规范 |
China National Standards Safety machinery―Safety specification |
 English PDF |
| GB/T 31254-2014 |
Safety of machinery―Safety specification for the design of fixed ladders 机械安全 固定式直梯的安全设计规范 |
China National Standards Safety machinery―Safety specification |
English PDF |
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