Characteristics and application of steel structure bolt

       Steel structure bolts are all called steel structure bolt connection pairs in production and manufacturing, generally not called high-strength bolts. Steel structure bolts are mainly used for industrial production and industrial buildings, railway tunnels, road and road bridges, pipeline and road bridges, tower and mast structures, heating furnace structure, steel frame structure of heating furnace, long-span factory buildings, high-rise residential industrial buildings, various towers, light steel structures, lifting equipment and other steel frame structure connection engineering buildings. Each connection pair includes a bolt, a nut and two sealing rings.

According to the installation characteristics, the steel structure bolts are divided into large hexagon head bolts and torsional shear bolts. The product cost of compression strength torsional shear bolt connection pair is higher than that of large hexagon bolts. When assembling the high toughness torsional shear type bolt connection pair, the side with the round table of the nut shall face the side with the fillet of the sealing ring; the high toughness torsional shear type bolt connection pair for the steel frame structure is an improved version of the large hexagon bolt connection pair for the steel frame structure, the key advantage depends on the construction relativity, the simple hexagon bolt and the small space in the construction room. The electric wrench shall be used to immediately put the end of the The plum blossom head can be screwed off, which is simple and convenient in safety and convenient in construction quality inspection. It does not need technical staff or machinery and equipment, but generally it can ensure the construction quality by looking at the inspection and confirming that the plum blossom head has been screwed off.

Torsional shear type bolt connection pair GB / t3632 includes one bolt, one nut and one gasket. During the assembly of large hexagon head steel structure bolt connection pair, the side with fillet under the sealing ring of bolt head shall face the bolt head; during the construction of large hexagon head high strength bolt, a torque wrench must be used, which requires a large space in the actual operation room, and it shall be carried out by two sets of initial and final screwing, which is inconvenient for the construction of relative torsional shear type bolt; the quality inspection must also be carried out by torque inspection, which must be technically specialized Industrial machinery and equipment and quality inspection staff.