Fastening method of flange surface screws

The flanges shall be fastened symmetrically by the maintenance unit following a formulated fastening plan. Additionally, the unit will label the sequence in which the fastening is conducted.

To ensure proper placement of the gasket, it is recommended to use four bolts. By doing so, you can ensure that the center of the wound gasket aligns perfectly with the edge of the flange. Taking this necessary step will help maintain the integrity and effectiveness of the gasket installation.

To ensure an even load distribution, it is important to tighten the fixing bolts by hand and then insert the remaining stud bolts before tightening them by hand as well. When tightening, make sure that at least 2 threads are exposed at each end of the nut. This will provide sufficient tension and keep everything secure.

It is important to determine the number of tightenings needed and the appropriate hammering load for each tightening based on on-site equipment and flanges. One tightening circle is equivalent to one round of tightening. To ensure the gasket seal does not fail, it is recommended to tighten the bolts in small increments (such as 50% or 80% increases) from small to large. The loading of the hammering load should not be too fast or too large to avoid damaging the gasket seal. Remember to tighten at least three times to ensure the bolts are tightly secured.

Here's a rephrased version of the original content:

To tighten a torqueless torx wrench or hammer wrench, follow these steps: Start by tightening the two bolts that are diametrically opposite to each other. Make sure to apply the specified hammering load or strength to these bolts. Once these bolts are tightened, move on to the next pair of bolts that are about 90 degrees apart from the previous ones along the circumference. Again, apply the necessary torque or hammer load to these bolts. Repeat this process until all the remaining bolts are tightened using the established hammer load.

To ensure proper installation, it is important to tighten all bolts in a specific direction based on the strength of the hammering load. This can be achieved by turning each bolt either clockwise or counterclockwise as needed. Be sure to follow the instructions carefully to avoid complications or potential damages during the installation process.