YONGHAO · ABOUT
Main various high-strength standard and non-standard fasteners
Jiangsu Yonghao High Strength Bolt Co., Ltd.
The company mainly produces M4-M120 high strength bolts, nuts, all kinds of special-shaped bolts and low-temperature -50 degrees impact test bolts. Products are widely used in elevator, bridge, high-speed rail, military, wind power, nuclear power, UHV and other industries
Founded in
Production workshop
Technical personnel
YONGHAO· PRODUCTS
Main various high-strength standard and non-standard fasteners
YONGHAO · STRENGTH
Processing Capacity
Existing various equipment 400 sets, the company has strong technical force, complete production equipment, reliable product quality.
Research and Development
With advanced production technology and scientific management, the technical team works closely with domestic colleges and universities to continuously improve products.
Has passed ISO9001:2015 quality management system certification, the company has high-quality staff 680 people, senior engineering and technical personnel 60 people.
YONGHAO · NEWS
2021-09-15
What should be paid attention to when installing bolts during steel structure installation?
High-strength bolts are most used in the installation of steel structures, and the following problems often occur in practice: Bolts are less exposed or lower than nuts; The bolts are not tightened, and the plum blossom head is screwed off during the twisting and shearing process, and the large hexagonal shape is not marked with the initial and final screwing; During the actual installation process, the original layer of protective paper on the friction surface was not completely torn off; Use high-strength bolts for temporary fixing, and do not paint seal within two days and two nights after installation; The torque and axial force were not re-tested, and the fastening torque was not calculated in strict accordance with the relevant regulations;
2021-09-15
Precautions for on-site welding of steel structure bolt balls
1. When it comes to welding, everyone is very worried. The welding of the ball handle is carried out in the factory, and it is the welding of the same base material, which is carried out according to the conventional process, which is no problem. On-site welding, such as the welding of the connecting plates of the rods, the welding of supports such as roofs, carriages, light bridges, and the welding of reinforcement parts when the grid is reinforced, etc., are welded after the grid is installed or during the use of the grid. There are three concerns about on-site welding: first, whether the internal force will change after the grid components are welded and heated, resulting in structural instability and damage; second, whether the welding of different base materials of Q235B steel plate and 45 #steel bolt ball is possible; third, after the welding of components heats up, especially on the bolt ball, will the welding cause high-strength bolt annealing and the strength will decrease.
Partner
Address: No. 8, Danhuagang Bridge South of Yanjiang Road, Xingang Industrial Park, Jingjiang City, Jiangsu Province
FAX：0523-84255089
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