The steel arch is divided into h-shaped steel arch frame, i-shaped steel arch frame, channel steel arch frame, miner's steel bracket and u-shaped steel bracket according to the production materials. M

1, channel steel is hot - rolled - shaped steel, U shaped steel is usually cold - rolled steel. 2. The detailed dimensions and mechanical properties of channel steel have been established into the na

Our company's u-shaped steel support has a quality inspection report, the quality can be guaranteed, can be made for mine roadway, mine roadway secondary support, as well as through the mountain tunne

Underground roof support the best stress state is close-grained filling after the uniform compression, as applied to underground roof support pressure value reaches a certain value, the bracket can p

U-shaped steel support is a kind of passive support for coal mine support, with high tensile strength and compressive strength, good toughness performance, high supporting force and large support stre

The main raw material of tunnel roof support is U section steel, which needs to be cut after cold forming and then connected with U section steel karan. It is mainly used for mine roadway support, sec