Characteristics and Application of Steel Structural Bolts
Characteristics and Application of Steel Structural Bolts
Steel structural bolts are commonly referred to as steel structural bolt connection pairs in production and manufacturing, but are not commonly referred to as high-strength bolts. Steel structure bolts are used for industrial production and industrial buildings, railway tunnels, road and highway bridges, pipeline and highway bridges, tower and mast structures, heating furnace structures, heating furnace steel frame structures, long-span plants, high-rise residential industrial buildings, various towers, light steel structures, lifting equipment and other steel frame structural join engineering buildings. Each connecting pair contains one bolt, one nut, and two sealing rings.
Steel structural bolts are divided into large hexagonal head bolts and torsion shear type bolts based on installation characteristics. The product cost of compression strength torsion shear type bolt connection pairs is higher than that of large hexagonal bolts. When assembling the high toughness torsional shear type bolt connection pair, the side of the nut with a circular table should be facing the side of the sealing ring with a chamfer; The high toughness torsion shear type bolt connection pair used in steel frame structure is an improved version of the large hexagonal bolt connection pair in steel frame structure. The key advantage lies in the construction relativity. The hexagonal bolt is simple, and the required indoor space for construction is small. The use of an electric wrench can immediately unscrew the end of the plum blossom head, which is simple and convenient in safety, and the inspection of construction quality is very convenient, without the need for technical professionals or machine equipment, Just looking at and verifying that the plum blossom head has already been twisted off can ensure the construction quality.
The torsional shear type bolt connection pair GB/T3632 includes one bolt, one nut, and one sealing gasket per piece. When assembling the connecting pair of large hexagonal steel structure bolts, the side with chamfered corners on the sealing ring under the bolt head should face the bolt head; When constructing high-strength bolts with large hexagonal heads, torque wrenches must be used. The actual operating room space required is large, and it needs to be divided into two sets: initial and final tightening. The construction of relatively torsional shear bolts is more inconvenient; Quality inspection also requires torque inspection, and requires technical and professional machinery and equipment as well as quality inspection personnel.
