Compared with other rigid brackets, it has retractability and stable and reliable bearing capacity, adapts to the load and deformation of soft surrounding rock, high section utilization rate, convenie

1. Check one by one whether the connecting parts and pins of the U-shaped tunnel roof support are complete and fastened, whether the movable cylinder body is damaged or deformed, check whether the sea

When operating the U-shaped tunnel roof support, the support worker should stand on the bottom frame of the rack box and face the coal wall to operate. It is forbidden to pedal in front of the base or

Do you know the U-shaped steel arch support? Have you ever used U-shaped steel mine supports? Since there is no such thing, let me explain to you the characteristics of U tunnel roof support today!

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

Compared with other rigid brackets, it has retractability and stable and reliable bearing capacity, adapts to the load and deformation of soft surrounding rock, high section utilization rate, convenie