1, the stress of the ring is more uniform and it is not easy to break and collapse.

After the circular manhole cover is stressed, it will spread pressure around, and it is not easy to crack and collapse because of uniform diffusion. Due to uneven stress, rectangular manhole covers are more prone to rupture than circular manhole covers. So the round manhole cover is suitable for durability.

2. The round manhole cover will not fall from any direction, which is convenient for operation.

The length of the diagonal of the rectangle is greater than the length and width of the rectangle. Therefore, the manhole cover is inclined and easy to fall into the well. In addition, the circle has no directionality, and there is no need to align and proofread the position, which is relatively more convenient for workers to operate.

3. The cost of generated materials is relatively saved.

Compared with a rectangle or a square, the inscribed circle of a rectangle has the smallest area and uses less materials to generate it. When people go in and out of the well, the cross section is round from above, so the round well is very convenient for people to go in and out.

Extended data

Performance characteristics of manhole cover:

1, high strength: magnesite test, high compressive strength, bending strength and impact strength, and good toughness. After long-term use, the manhole cover will not be crushed and damaged, and the "urban black hole" accident can be completely eliminated.

2. Beauty: the surface pattern of magnesite manhole cover is beautifully designed, with bright and adjustable colors, beautifying the urban environment.

3. Easy to use and light in weight: the weight of the product is only about one third of that of cast iron, which is convenient for transportation, installation and emergency repair, and greatly reduces the labor intensity.

4, anti-theft: magnesite manhole cover has no recycling value and is naturally anti-theft; According to the needs of customers, it is equipped with a locking structure to realize the anti-theft of property in the well.

5. Strong weatherability: Through scientific formula, advanced technology and perfect technical equipment, the magnesite manhole cover can be used normally at -50℃ ~+300℃.

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