Teach you how to install steel structure bolts correctly

The full name of steel structure bolt in production is steel structure bolt connection pair, which is not generally referred to as high strength bolt. Steel structure bolts are mainly used in the construction of industrial and civil buildings, railway bridges, highway bridges, pipeline bridges, tower mast structures, boiler frames, boiler steel structures, large-span industrial workshops, high-rise civil buildings, various towers, light steel structures, lifting machinery and other steel structure connecting buildings.
Each coupling pair includes a bolt, a nut and two washers. According to the characteristics of the device, steel structure bolts are divided into large hexagon head bolts and torsion shear bolts. When assembling the high-strength torsional shear bolt connection pair, the side of the nut with round table should face the side with chamfered washer; the high-strength torsional shear bolt connection pair for steel structure is an improved type of large hexagon bolt connection pair of steel structure. The main advantage is that the construction of large hexagon bolt is simple, and the construction space is small. It is safe and convenient to screw off the plum head at the tail directly with electric wrench When, and check the construction quality is very convenient, without professional personnel or equipment, just general visual inspection admitted that the plum blossom head has been twisted off to ensure the construction quality.

However, the production cost of strength torsional shear bolt connection pair is higher than that of hexagon bolt. Each set of GB / t3632 torsional shear bolt connection pair contains one bolt, one nut and one gasket. During the assembly of large hexagon head steel structure bolt connection pair, the chamfered side of the washer under the bolt head should face the bolt head; when the large hexagon head high-strength bolt is constructed, the torque wrench is required, and the operation space is large, which should be completed in two parts: the initial tightening and the final tightening, and the construction is more expensive than the torsion shear type bolt; the quality inspection also requires torque inspection, which requires professional equipment and quality inspection personnel.
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