• Model NO.：as per drawing
• Application：Machinery, Chemical Industry, Environmental, Building
• Finish：Hot Galvanizing
• Transport Package：Standard Export Packaging
• Specification：PACK
• Trademark：zhongda
• Origin：China
• HS Code：7308200000
• Production Capacity：3, 000, 000

Basic Info.

Model NO. as per drawing Application Machinery, Chemical Industry, Environmental, Building Finish Hot Galvanizing Transport Package Standard Export Packaging Specification PACK Trademark zhongda Origin China HS Code 7308200000 Production Capacity 3, 000, 000

Product Description

High-strength bolt 10.9 grade
That is, the ratio of yield strength to tensile strength is a high-strength bolt in the international standard. When selecting bolts, you can choose as long as the performance level is the same. You don't need to care about the difference in material and origin, but the data can be read only if the threads are completely consistent.

How to choose bolts:
1. First of all, when selecting bolts, pay attention to the size. Usually, the selection is based on the equipment, that is, the size of the connecting piece and the firmware is determined. It is difficult to see with the naked eye, and on-site measurement is not realistic. The direct method is to check the bolt specification. In addition, pay attention to the matching of the two components to ensure uniform tightening, and in the matching, the performance of the nut cannot be lower than the bolt level.

2. Secondly, when choosing a bolt, look at its appearance. The surface of a good bolt is smooth and oil-free, and there will be no burrs and weld bead in the hole wall. In addition, when touching by hand, pay attention to the accuracy of the cross-section resistance.
3. When choosing bolts, pay attention to the electroplating color. Its quality directly determines the quality of the bolts. Because sometimes the bolts are used in damp places, the electroplating process is good, not only is not easy to rust, but also does not affect the appearance. At the same time, it will not affect the quality of the fastening.

4. When choosing the bolt at last, pay attention to its length, usually according to the profile of the connecting piece. For example, 3030 aluminum profile, use 12 mm bolts, and 4040 aluminum profile, use 16 mm bolts. In addition, pay attention to its corresponding tools, such as wrenches and measuring tools when used for installation or removal.