Shandong China Coal Group Instrument Branch

Carbon monoxide can harm our human health. If carbon monoxide poisoning is harmful, it will lead to death. So remind everyone to use gas safely. Comrades working in the factory should also pay attenti

In order to ensure the accuracy of concrete protective layer thickness detection, testers should be proficient in the performance of the instruments they use and the degree of influence of various fac

The thickness of the concrete protective layer is insufficient, and the external harmful medium easily penetrates the protective layer to reach the surface of the steel bar, causing the steel bar to r

How to increase the waste detector success rate of finding water?First you should choose a high quality water detector,and then we have summrized the following points for your reference!And our water

Recently, the DFB (1400-4400 standard specifications)/300, DJB600/470, DJB800/420, DJB (1000, 1200)/300 metal roof beams independently developed and produced by China Coal Group, of which 4 types of h

Ultrasonic flaw detectors mainly uses the propagation characteristics of ultrasonic waves in the workpiece, such as the loss of energy when the sound waves pass through the material.