1. The hydraulic support worker must be familiar with the performance, structure, principle and hydraulic control system of the hydraulic support, master this operating procedure, be able to maintain
The U-shaped steel arch support is a kind of steel with a cross-sectional shape like the English letter "U". The cross-sectional shape, geometric parameters and material of U-shaped tunnel roof suppor
Compared with other rigid brackets, the U-shaped steel arch support has a shrinkable and stable and reliable bearing capacity, adapts to the load and deformation of the soft surrounding rock, has a hi
The tunnel roof support is very cost-effective, but the price will be different due to different specifications. In addition, due to the impact of customer requirements on processing methods and raw m
U channel steel support cross section is shaped like the letter "U" in English. National production of u-shape cross-section shape, geometric parameters and material is different, at present China''''
U channel steel support cross section is shaped like the letter "U" in English. National production of u-shape cross-section shape, geometric parameters and material is different, at present China''''
