The DJB-type metal hinged roof beams, metal hinged roof beams metal roof beam metal hinged roof beam DJB type metal hinged roof beams are medium-sized roof beams, the beam itself is 8 # π steel butt made the beam body cross-section height of 70. The roof beams of this type is an articulated roof beams, the DJB metal hinged roof beams and all types of monomers metal pillar with the composition of the metal bracket for coal mines in the horizontal and gently inclined stope support a high-intensity roof beams. Top the beam can Cantilever Retaining Face coal wall in front of the transport aircraft Road above the roof Because of this, it is no support in the coal wall and pillar. Therefore, provided the conditions for new coal mining machinery and bendable transport aircraft, general mechanization of the coal mining, is a high-end general mining and new high-end the mining technologies necessary equipment. Specifications Model length Height (mm) Xu a load (KN) Xu adjust the angle of the Moment (KN.m) the overall hardness Weight (mm) hinged beam, beam hinged Ministry beam hinged, vertical and horizontal (HB) (kg) DJB600/470 600 138 90 470 170 52.5 30 ≥ 70 ≥ 30 300-350 21 DJB800/420 800 420 25 DJB1000/300 1000 300 29 DJB1200/300 1200 300 33 main sections - H section steel T section W steel strip hinged roof U-shaped steel beam metal beam scraper central groove U-shaped steel bracket π steel crane rail rail ore U steel miners steel mining support steel Hexahedrons lifting rail light rail ramp channel scraper steel heavy rail-class quality, first-class reputation, class service to meet the needs of the customers! Company with a good reputation, perfect service, has won the praise of the major domestic enterprises, this point has been supporting over the years to care for and help the development of our company, friends from all walks of life, old and new customers to pay tribute; and responsibility to meet customer demand more excellent products, more attentive service dedicated to you!