重荷重D400ダクタイル鋳鉄製マンホール蓋

Hebei Mingda offers a variety of manhole covers for your convenience. From our all-fiberglass, road-ready, manhole frame and locking cover, to our standard hinged, 
dome cover, we have the solution for you. Lightweight manhole covers, that do not represent any scrap value, are easy to install and are strong and durable enough to
withstand nearly any environment. Mingda also provides custom manhole and vault solutions for openings of nearly all shapes and sizes. 
Whatever your project requires, Mingda has you covered!