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.

Processing advantage

1. The spiral blade produced by the continuous cold rolling method overcomes the shortcomings of the traditional spiral blade production process, such as poor precision, difficult forming and high consumption of materials, and low production efficiency.

2. After the blade is formed, the surface is smooth and the dimensional accuracy and surface hardness are high.

3. Provide continuous integral blades according to the helical length required by customers, with good rigidity, convenient and fast welding and assembly during use.

Finished Product

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Customized according to samples

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