Marine manhole coverMarine manhole cover refers to the general name of the cover plate and its fixing accessories installed on the manhole with sealing performance. Manhole covers can be divided into protruding type and embedded type according to whether they are higher than the opening surface after installation.
The cover plate, coaming and seat ring of the marine manhole cover are usually made of hot-rolled carbon steel or the same materials as the hull structure where the manhole cover is installed. Bolts, studs, nuts and washers made of carbon steel shall be galvanized.
Process: cutting, welding, drilling, etc.