Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
HG/T 21527-2014 |
Quick open manholes with hinged dome cover 回转拱盖快开人孔 |
China Chemical Industry
Standards Quick open manholes |
![]() English PDF |
HG/T 21526-2014 |
Elliptical Quick open manholes with hinged cover 椭圆形回转盖快开人孔 |
China Chemical Industry
Standards Quick open manholes |
![]() English PDF |
HG/T 21525-2014 |
Quick open manholes for atmospheric use 常压旋柄快开人孔 |
China Chemical Industry
Standards Quick open manholes |
![]() English PDF |
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