High strength well lid and molding method of high strength well lid

The invention discloses a high strength well lid and a molding method of the high strength well lid. The high strength well lid comprises a support outer ring serving as the outer edge of the whole well lid in an end-to-end connection shape, a plurality of ribs uniformly arrayed along the radial direction of the support outer ring, a support inner ring which is in an end-to-end connection shape and is welded and fixed on the inner wall surface of the support outer ring, and a concrete layer injected and molded in a cavity formed by the support outer ring and wrapping the support inner ring and the ribs therein, wherein at least one end of each rib is welded at the inner wall surface of the support outer ring; the support inner ring is abutted against the ribs and is positioned below the ribs. Compared with the prior art, the high strength well lid has the advantage of high strength while achieving low cost.