Hinged roof beams, metal roof beams, hinged roof beams lowest, hinged roof beams specifications, mine metal roof beams, hinged roof beams Shandong factory, mine hinged roof beams, hinged roof beams offer, Shanxi hinged roof beams specifications, metal hinged roof beams, Guizhou ore supply with roof beams, hinged roof beams hinged roof beams suppliers affected by the economic situation, the momentum slowed global mining, minerals and mining investment scale trade contraction, mining investment environment changes ensued, hinged top Beam-to-date evaluation of the global mining investment environment is necessary. Land and Natural Resources Information Centre at 2014 Global Mining Investment Environment Evaluation project, hinged roof beams to the global mining investment environment is divided into five stars, stars, the higher the investment on behalf of the National Mining environment better. Among them, the mining investment environment for the five-star, on behalf of the country's resource potential, hinged roof beams basic foreign mining investment national treatment, political stability, legal risk is low, improve public facilities, low cost, good earnings expectations . Do you know what metal hinged roof beams use it? Metal hinged roof beams where the most cheap? Then to Jining Gast it! Metal hinged roof beams is an articulated roof beams, he can transfer all types of single pillar with metal studs with the composition of the metal roof bracket for horizontal and gently inclined coal mining face support use. A major role in the horizontal and gently inclined coal mining face and nose, or other large area roof top control to achieve a relatively large working surface without prop work space, but also for mine tunnel roof support, and monomer pillar with the composition of the metal bracket supporting role to play top beam of JSD-YK Specifications Model Length Height (mm) Allowable load (KN) to adjust the angle of the overall hardness promise weight Moment (KN.m) (mm) hinge beam girder body hinge hinge beam up and down (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 Gast 33 Shandong Mining Equipment Manufacturing Co., Ltd., for many years engaged in the production and development of mining equipment, with the strength to prove quality, welcome new and old friends to negotiate