... CoverFeatures:1) More than ten years' experience on manufacturing and exporting manhole covers.2) We have processed more than 200 ... produce drain cover using steel, stainless steel by electric welding and punching.5) Product series include Class B125, C250, D400 ... E600, F900 meeting the relevant EN124, BVQI and Australian standards and so on.6) Form and Sizes available: square, rectangle, round, from ...