surface size square&rectangle manhole cover

GRP/FRP( Fiberglass Reiforced Plastics)composite manhole cover to BS EN 124. High load capacity containing four grade A15(1.5 ton), B125(12.5 ton), C250(25ton), D400(40 ton), E600(60 ton), F900(90 ton). Round sizes: 300mm, 400mm, 600mm, 700mm, 760mm, 900 and as clients' requests; Square sizes: 230*280mm, 300*300mm, 500*500mm, 600*600mm760*760mm, 900*900mm, 1000*1200mm and as clients' requests. Quanlity: Passed ISO9001: 2000 and SGS certificate Price: $10-90 and a discount according to conatainer order, support dealer mass order; Packing: 500 sets in one container