china coal 0001 DJB600 Mental Roof Beam Keywords: Hinged Roof Beam, Roof Beam Price, Mental Roof Beam Introduction of DJB600 Mental Roof Beam This products are mainly used for the top plate support,it has two types : mental articulated roof beam Mental roof beam This products are mainly used for the top plate support,it has two types : mental articulated roof beam; mental non-articulated roof beam. technical parameter of mental non-articulated roof beam Parameter of DJB600 Mental Roof Beam Length:600mm  Permitted bending strength(KNM) girder:52.5 Permitted bending strength(KNM) articulated part:30 Adjust angle vertical angle:7 Adjust angle horizontal angle: 3 Weight :18.9