... productmodel(millmeter)materialcolorweight(kg)applicationSMC water grate500x400x40composite resinany19 for motorized vehicles, municipal pipelines, communications, power, ... squares and other drainage projectsplastic water grate580x265x20composite resinany6 for urban roads, parks, squares and other ... crash and have a spark, especially for use in explosive environments, in addition, the covers with non- ...