Steel arch support production equipment has I - steel cold - bending machine. Automatic i-steel cold bending machine can bend various types of profiles such as: channel steel, i-steel, h-shaped steel,

1, The steel arch support should be installed according to the design position, the steel support must be longitudinal connection with reinforcement, and to ensure the welding quality. In the process

After installation of tunnel roof support, due to poor soil since the stability of surrounding rock and a certain distance between each excavation tunnel roof support in a short period of time did not

Mine roof support is a kind of support measure commonly involved in tunnel construction. The construction quality of roof support directly affects the installation, progress and enterprise image.

Steel arch support is a support measure to reinforce underground engineering after shaped steel is formed. The steel arch frame is processed on site and piled up in a centralized manner. The following

The steel mine support is beneficial to improve the stress state of the support, improve its bearing capacity and maintain the stability of surrounding rock. In order to ensure the safety of mine prod