25U steel bracket with effective to reduce the roof, sheet occurrence of accidents, safe and reliable, improve the stability of the mine ventilation system and other significant features. Selection of

Supporting of soft rock tunnel excavation has been one of the key technical problems which affects the further development of coal industry production and construction of our country . Deep mine groun

Underground roof supports are mainly used for mine tunnels, secondary support of mine tunnels, and support for mountain tunnels. It is reliable, effectively reduces the occurrence of accidents such as

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-shaped steel support has the advantages of high setting force, strong support strength, easy installation, and non-deformation.

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