Large hex head bolt refers to the size of the hex head is larger than the
ordinary hex head bolt, used for permanent connection, can
not be reused. From the appearance point of view, the head
of the large hexagonal head high-strength bolt
is hexagonal
The construction and arrangement requirements of high-strength bolts are
the same as those of ordinary bolts. Then it must be used in accordance
with the specification, the large hexagonal head can only use 8.8
high-strength bolts, and the pre-tension of the high-strength
bolts of the steel structure is achieved by tightening the
nuts. Usually the torque method, the Angle method or the
method of twisting off the bolt tail to control the pre-tension.
Steel structure hexagonal bolts are usually made of high-strength steel,
such as 45# steel, 35# steel, etc., to ensure that they are not easy to
break when bearing a large load. The high-strength large hexagon bolt
has high tensile strength and shear strength, which can effectively resist
the axial and shear stress at the joint of the bolt. In addition, large hex
bolts also have good corrosion resistance and can be used in humid
environments and corrosive media.
Because the fasteners with black zinc plating have good corrosion resistance and wear resistance, they are suitable for harsh working environments, such as Marine environments and chemical equipment.In addition, black zinc plated fasteners are also commonly used in occasions requiring higher aesthetics, such as automotive, electronics and other industries.
Steel structure hexagonal bolts are widely used in construction, bridge, tower, mechanical equipment and other fields. In the field of construction, large hexagonal bolts can be used for the connection of steel structure frames and the fixing of wall panels. In the field of Bridges, large hexagon bolts can be used to connect the main beam of the bridge with the beam, the longitudinal beam, etc. In the field of towers, large hexagonal bolts can be used for the connection of the support structure and platform of towers.
Bentley has invested a huge amount of money to build a product testing laboratory, equipped with imported
high-end instruments: such as thread comprehensive scanners, high temperature tensile testing machines, high frequency fatigue testing machines, etc., to ensure that all products are strictly tested before leaving the warehouse to ensure the reliability of customers during use.
