Specifications
Zhong xiang group supporting material for many years engaged in mining and mining support processing business, based on the coalMine, u-shape set is mainly composed of 25 36 U, profile bending welded together, 40 common single section beam, double beam section, three beams, and the supplementary ground beam and other specifications.Mainly used in deep surface structure, due to the arc shape, bearing capacity is strong, plus card cable link site, adjustable elastic, can adapt the soft soil geological.Common in coal mine roadway construction, mining tunnel construction as well as the dam drainage channel construction fields, etc.
Mining support steel produce introduction U-Beam mining support steel
1)Specification: U25, U29, U36;
2)Assembly: top beam, two landing legs, four clamps, two baseplates
3)Material: 20MnK Q275
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1) clamp each part must have good interchangeability, bolts should be installed directly on the card cable board.
2) clamp surface should no cracks, burrs and other defects.
3) clamp surface need to be quenching, the material is not less than the U-shaped bracket Q345 steel mechanical properties of low carbon steel;
4) after forming clamp thickness tolerance of ± 0.5mm, the width tolerance of ± 0.2mm. Bolt hole spacing tolerance of ± 1mm.
5) clamp bolts should be used with the U-shaped steel material corresponding bar production.
6) Bolt specifications for the M24, length 35mm, thread size should be consistent GB/T96 basic requirements, tolerances shall comply
with the provisions of GB/T197 accuracy of 8g.
Mainly parameter
ParameterMaterial:20mnk Q235
Detail parameter
18U height:99mm thickness:10mmthory:18.96kg/m
25U height:110mm thickness:17mm TheoreticWeight :24.76kg/m
29U height:124mm thicness:16mm TheoreticWeight :29kg/m
36U height:138mm thicness:17mm TheoreticWeight :36kg/mMine
40U height:149mm thicness:20.2mm TheoreticWeight :40kg/m
