We have a deep understanding of the appearance and use of U-shaped steel arch support, but we may have a little understanding of the material requirements of U tunnel roof support. Now let's make a de

The main characteristics of U29 steel arch support: bear pressure, support for a long time, easy to install, not easy to deformation and so on.

U-shaped steel arch support is a kind of passive support for underground roof support. It has high tensile strength and compressive strength, and has good toughness performance. It has high supporting

U-shaped steel arch support (full name: hot-rolled U-shaped steel for mine roadway support) U-shaped steel is a kind of steel with a cross-section like the English letter "U", and sometimes the cross-

The best stress state of the U-shaped steel arch support is that the back wall is filled and compacted to make it evenly compressed. When the pressure value of the surrounding rock used on the U-shape

Due to the collapse of coal mines, iron ore, etc., or collapse, etc., and various external factors cause deformation of some parts of the roadway, which seriously affects the safe use of mine roadways