Benefit and Features

Surface Treatment

Stainless Steel’s surface is treated by mirror polishing to make it more pleasing and longer performing.

With Lead Sealing

With the Lead Sealing Board, it can be sealed directly.

Opening Angle

The turn-hinge with the opening angle stop device, it can effectively prevent the crash which between the stainless steel manhole cover and tanker when the cover is opening.

Type Diversification

The nominal diameter, material and height can be ordered by user’s demand.

Structure Features

The size is more smart, it’s better suit the small installation space’s requirements. Double flange surface sealing, sealing gasket place in the bottom cover, with more reliable tightness


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