不锈钢人孔盖，EN124 D400重型方形检修盖

重型不锈钢井盖认证EN 124 D400，内部钢筋增强负载能力。这种凹进的，瓷砖盖与四个角提升孔可以很容易地通过一个不锈钢钩去除，理想的市政道路，园林绿化和重型交通项目。

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