projeto da bomba de resíduos
The submersible drilling rig, available in both internal combustion and electric models, is a device for drilling holes in rocks. The characteristics of drill drilling is outstanding, according to different characteristics can be divided into many varieties, different varieties of drill drilling scope is not the same, facing the classification of drill drilling, the way is briefly introduced as follows:
4, the selection of rolling drag plate, the track is not easy to wear.
4, the selection of rolling drag plate, the track is not easy to wear.