Long metal beam - hinged roof beam-π-beam - double wedge roof beams - like roof beams cross girders assured incomparable Zoucheng long metal beam hinged roof beams price π-beam double wedge roof beams suppliers manufacturers wholesalers metal roof beams cross roof beams are hydraulic prop, friction metal pillars supporting products, which cooperates with the pillars together to complete the coal face of roof support. The main specifications are different types of articulated roof beams and a long row of beams. In djb, dja Articulated roof beams, for example, can also be sold separately sets to sell. The main technical parameters below. Types and Specifications center distance (mm) Allowable load (kn) Allowable bending moment (kn.m) to adjust the angle (°) Weight (kg) hinged top and bottom hinge portion beam beam around djb600/470 600 470 170 43.7 20 ≥ 7 ≥ 3 19.4 dja600/390 390 115 15.9 djb800/420 800 420 170 23.5 dja800/350 350 115 21.2 djb1000/300 1000 300 170 27.6 dja1000/250 250 115 24.3 djb1200/300 1200 300 170 31.8 dja1200/250 250 115 28.3 Standard: mt30-2000 is equipped with a metal roof beams shoot level, please indicate the time of purchase or without, if not to say the default is without service: We can not only provide customers with timely and good quality, customer satisfaction and low price products, we also There are service personnel, if you buy our product problems within the warranty period, as long as you come to a timely and efficient telephone we will solve the problem for you, never to meet your satisfaction!