DFB Metal Long Beam can long span cantilever support control top area
roof. Implement working face has a larger no-support supporting work space. In order to improve the working conditions, adopt new type of coal mining
machinery, flexible conveyor cashier transform the favorable conditions.
1,Bearing capacity of beam span 700 mm, middle of beam concentrated load;
2,Weight contain 0.7 kg/m weld weight;
3,In model specification each is 200 mm add a specification
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