球墨铸铁防盗井盖 圆形700铸铁污水井盖防盗耐磨性高

     球墨铸铁防盗井盖 圆形700铸铁污水井盖防盗耐磨性高 

   Nodular cast iron anti-theft manhole cover round 700 cast iron sewage manhole cover with high anti-theft and wear resistance

     在日常中城市道路上常见的是金属井盖，金属井盖大多采用的是球墨铸铁井盖，球墨铸铁材料就是铸铁材料当中的一种。球墨铸铁的形成：球墨铸铁是铁水在凝固过程中，内部结构元素就会形成形状为球状石墨的铸铁，球墨铸铁它是一种高强度的铸铁材料。 目前为了道路安全， 球墨铸铁井盖一般都做成防盗功能的井盖， 这种球墨铸铁防盗井盖设计多种多样，有的防盗措施还是我们安装的弹簧弹簧的井盖，装完以后会自动起到一个防护的作用，不用专门的工具是打不开井盖的，有些比较特殊的球墨铸铁防盗井盖采用具有设计的新型防盗锁和钥匙采用高硬度、防绣黄铜制作，防盗锁在日常使用的过程中生锈，使井盖打不开。对现在的球墨铸铁井盖儿来讲呢，不管原来有没有防盗锁，现在还可以很轻松的加上防盗措施，比如说可以在井盖上轻轻地打一个小眼，装一个机械的防盗锁，那么这种锁加完以后来只能用专业的工具才能把井盖打开。 

Metal manhole covers are common on urban roads in daily life. Ductile iron manhole covers are mostly used for metal manhole covers. Ductile iron is one of the cast iron materials. Formation of nodular cast iron: nodular cast iron is a kind of high-strength cast iron material whose internal structural elements will form nodular graphite during solidification of molten iron. At present, for the sake of road safety, nodular cast iron manhole covers are generally made into manhole covers with anti-theft function. This kind of nodular cast iron anti-theft manhole cover has a variety of designs. Some anti-theft measures are spring spring manhole covers installed by us. After installation, they will automatically play a protective role. It is impossible to open the manhole cover without special tools, Some special nodular cast iron anti-theft well covers are made of new anti-theft locks and keys with high hardness and anti embroidery brass. The anti-theft locks rust in the process of daily use, so that the well covers cannot be opened. For the current nodular cast iron manhole covers, whether there was an anti-theft lock or not, anti-theft measures can be easily added. For example, a small hole can be gently punched in the manhole cover to install a mechanical anti-theft lock. After this lock is added, only professional tools can be used to open the manhole cover.

     球墨铸铁防盗井盖一般是圆形的，其规格尺寸400/500/600/700/800/1000/1200规格都有，球墨铸铁通过球化和孕育处理球状石墨，更好地提高了铸铁的机械性能，特别是提高了塑性和韧性，从而比碳钢还高的强度。在新型五防井盖设计中采用了新型的设计理念，使车辆在通过井盖时，不砸井盖，而是砸到井圈的边沿处，防止井盖整体下沉，解决城市中的井盖周围“烂边”问题。

Nodular cast iron anti-theft manhole covers are generally round, with sizes of 400/500/600/700/800/1000/1200. Nodular cast iron can better improve the mechanical properties of cast iron, especially the plasticity and toughness, so that it has higher strength than carbon steel. The new design concept is adopted in the design of the new five prevention well cover, so that when the vehicle passes through the well cover, it does not hit the well cover, but hit the edge of the well circle, so as to prevent the overall sinking of the well cover and solve the problem of "rotten edge" around the well cover in the city.