Shandong China Coal Group Instrument Branch

The requirement for the detection of harmful gases in confined spaces is that the multi gas detector must be detected in advance. Before personnel enter, the components of gas in the confined space mu

The multi gas detector is a commonly used detection instrument. It mainly uses gas sensors to detect the types of gases in the environment. It has the advantages of stable performance, flexible use, h

Leak detection method-sound and hearing leak detection method The sound leakage detection method is divided into valve plug listening and ground listening. The former is used to find the clues and sc

Beam + 10mm, -7mm board + 8mm.-5mm. The thickness of the protective layer of the longitudinally stressed steel bars of beam and slab members shall be checked and accepted separately and shall meet the

On August 26, in the underpass of Jiangbei City, the staff accurately positioned the blockage with the help of robots. Chongqing Daily News (trainee reporter Wang Tianyi) After the flood, some underg

Because in reality, most of the gases encountered in safety and health are mixtures of organic and inorganic gases. It is just for various reasons that our current understanding of toxic and harmful g