Introduction to anti-theft manhole cover

1. The production process is mature, and the portable manhole cover of any specification can be equipped with the anti-theft device by drilling two holes as required. When making a new manhole cover, two holes shall be reserved as required during casting, and the anti-theft device can be installed.

2. The manhole cover of the anti-theft device is equipped with high performance and high performance, and it can be secured and opened in a few seconds by using something that must be kept by a specially assigned person. Its anti hitting, anti sawing, anti prying, anti drilling and other effects can not be opened by anything else; It also has good anti freezing and anti rust effects.

3. It has a wide range of applications and low cost. The device can be divided into several specifications, each of which can satisfy the efficacy of more than ten specifications. Therefore, the device can adapt to various manhole covers of different specifications all over the world, and can also be exchanged, used and scaled.