Difference between circular and square access panel.

Difference between circular and square manhole Security difference

Round: the diameter is the same in all directions, so it can't fall through the wellhead, which is more safe. The diagonal of the square is longer than the side length, so there is a risk of falling obliquely.

The circular pressure is evenly distributed and not easy to be damaged; The stress concentration of square corners is easy to wear.

Functional applicability Round: it is mostly used in deep wells (such as sewers), which is ergonomic and easy to maintain. Square: it is common in shallow facilities (such as cable channels and rain outlets), and the larger opening is convenient for equipment placement.

Operation convenience Round: it can be rolled and transported, and the installation does not need to adjust the direction. Square: it needs to be lifted and installed in alignment, but the corners can be fixed to prevent displacement.