π-beams, DFB metal roof beam, π-type roof beam 
 Metal roof beam, 7 # π-beams which can be used with all types of monomers, composed of metal pillars with metal stents, for mine are inclined in the horizontal and slow recovery, or other large face and head control to use the top area. It long span cantilever roof top area retaining control, face a greater realization of pillars supporting the non-working space, to improve working conditions and the use of new coal mining machinery and flexible transport cashier favorable conditions for the transformation. 
 Technical characteristics: 
 Characteristic length of the allowable bearing capacity of beam bending moment (KN) weight 
 Model Specification (mm) (KN.m) Minimum Maximum (kg / m) 
 DFB.1400 ~ 9800 1400 ~ 4400 52.50 300 400 20.78 
 Description: 
 1: Material: 27simn 
 2: The width of 100mm. Height 90mm Thickness: 8mm 
 3, the carrying capacity of the beam span of 700mm, the beam central concentrated load; 
 4, the weight with 0.7kg / m weld weight; 
 5, a difference of 200mm each model specification adds a specification 
 The actual needs of customers can be processed by the system to do all kinds of non-standard long metal beam, hinged roof beams, and all products have been burned heating modulation processing, production and processing in strict accordance with national standards, quality and quantity! 
 Large supply of Jining Coal: various models of hinged roof beams, long beams, and other supporting products and accessories; products are sold to more than 20 provinces, municipalities and autonomous regions, shelf, complete model, quality is forever, no service limit, sincerely welcome new and old friends to inquire and order!