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русскийMar 07,2024
In the color steel structure project, although the amount of Self-tapping Screw is not very large, the quality of Self-tapping Screw is very high, so why do we need high-quality Self-tapping Screw? The role of Self-tapping Screw in the color steel structure project is to fix and lock the color steel plate to prevent it from falling off. If a poor quality drilling screw is used, such as:
1. The cold heading process of the Hex Bolt cap is poor, causing the hexagonal head to slip or even turn around.
2. The screw is too thin, and the cap screw is broken after drilling through.
3. The dovetail clipping process of the tail is not up to standard, burrs, and the drill bit is not sharp, which causes the drill bit to turn red (of course, there are also some reasons for steel, do not use steel from small steel mills).
4. If the electroplating process is not handled properly, hydrogen embrittlement occurs, and fracture occurs after installation, resulting in serious hidden dangers to quality.
Stock Code: 000906