We have also introduced the knowledge of U-shaped underground roof support before, knowing that it is mainly used for mine roadway, secondary support of mine roadway, and support and support of mounta

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