復合井蓋是采用復合材料制作的井蓋，它的綜合性能是各種材料的井蓋中是屬一屬二的，下面是詳細的分析數據：

1 工藝方面:屬于厚壁注塑，這種方式無論是在國內還是在國際上的同行業中都屬于一個技術難點。在失放應力時，就易開裂、易氣泡，收縮變形大，而且幾何尺寸難控制。

2 與其它復合材料對比：屬于厚壁注塑，這種方式無論是在國內還是在國際上的同行業中都屬于一個技術難點。在失放應力時，就易開裂、易氣泡，收縮變形大，而且幾何尺寸難控制。

3 井蓋表面需要打孔時的優勢：井蓋要有一定的剛性防止提鉆時板材顫動，又要有一定彈性，當鉆頭下鉆接觸的瞬間立即變形，使鉆頭精確地對準被鉆孔的位置，保證鉆孔位置精確

通上以上三方面可以看出，復合井蓋無論是在工藝方面，與其它材料對比方面還是后期的二次加工方面都有著明顯的優勢，所以得到了越來越廣泛的應用。

Composite covers are made of composite material covers, its overall performance is covers various materials is a genus of two , the following is a detailed analysis of the data :

A process : the part of thick-walled injection molding, in this way , whether at home or in the same industry in the international arena belongs to a technical difficulty . Put stress on the loss , it is easy to crack , easy bubbles, shrinkage deformation, and geometry difficult to control.

2 Comparison with other composite materials : thick-walled injection molded part , in this way , whether at home or in the same industry in the international arena belongs to a technical difficulty . Put stress on the loss , it is easy to crack , easy bubbles, shrinkage deformation, and geometry difficult to control.

3 covers the surface of the punch when needed advantage: the covers have a certain rigidity to drill the plate to prevent vibration, but also have a certain flexibility , the moment when the drill bit contacted immediately following the deformation , so that the drill precisely aligned position is drilled ensure accurate drilling position

Pass on these three aspects can be seen both in the process of composite covers , the comparison with other materials or secondary processing aspects of late have a distinct advantage , so get a more widely used .

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深圳市風采市政道路設施有限公司是廣東省成立最早、規模最大的從事新型復合材料防盜檢查井蓋的企業。主營產品:電力溝蓋板;復合井蓋;水箅（水溝蓋板）;植草鋪磚凹井;電信井;樹脂花盆;護樹板。公司成立于2003年，注冊資金1228萬元，是一家集研發、生產、銷售、服務為一體大型企業。總部位于深圳，北京設有分廠，總占地3萬多平方米，建筑面積1萬多平方米，擁有員工100多名，大型模壓設備20多臺。