W steel belt is a new type of mining support material, W/M steel belt use the rolled steel sheet that the thickness is 3-5mm, width is 180-320mm, after the cold bending to W type, in W steel belt, the steel strip with the bolt is equal to the bolt hole. W steel belt can combine to the anchor plate bracket with all kinds of bolt, W steel belt combine many bolts to a monocoque structure, W steel belt is widely used in coal mine underground roadway, working face cutting, chamber and other areas of roadway support, it is better to deal with unstable surrounding rock.