How to store the bolts in the warehouse?

The high-strength bolt connection pair shall be cleaned, classified and stored in the room during the delivery phase according to the specification model, production batch number and serial number marked on the packing wooden case. The deposit shall not be higher than 3 floors or so.The ratio of height to width of the lowest layer from the road surface should exceed or equal to 300mm.For installation at construction site, the total number of high-strength bolts must be distributed.Keep the rest safe.Do not throw, heap, damage external threads, be dirty.Before the application of the long-stored high-strength bolt connection pair, a comprehensive product quality inspection shall be conducted again, and the inspection shall be carried out in case of any abnormal situation after unpacking.Apply after passing the assessment.

The pipe of the high-strength bolt is raised to avoid the change of its torque coefficient, otherwise the dimension of the axial force of the bolt cannot be controlled on the construction site.Torque coefficient is related with many factors, not only to the manufacturing process to ensure that, and in the handling and storage for bolt, nut, washer, corrosion, lead to external thread damage, or standing in the dirt or grease, dry bath, etc., can make the bolt torque coefficient produces a lot of change, damage to the high strength bolts and high strength bolt tightening torque required torque value.Therefore, attention should be paid to prevent the torque coefficient from changing, which is important to ensure the high strength bolt engineering construction.Therefore, the whole process of bolt packaging, transportation, on-site storage must maintain its original factory conditions, to understand the installation before the application can be opened to examine the application.