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2025-08-15 04:45
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    Black iron galvanized steel is widely used in construction, where structural integrity is paramount. From beams and columns to roofing and fencing, this material provides the strength needed for various applications while also offering corrosion resistance. It is particularly valued in outdoor settings where exposure to weather is a concern.


    The location of a sewer manhole must be carefully considered to ensure that the drainage system is effective and easy to maintain.[14][15] According to design standards, the distance between two manholes is typically between 7 and 20 meters, depending on the specific characteristics of the project.[16][17] In cities, the distance is 20 meters per manhole,[18] while in industrial or commercial settings it is 10-15 meters per manhole.[19][20] The distance between manholes in homes or restaurants is typically 7-10 meters.

    Unlike their precast cast iron counterparts, this manhole material is easy to handle, weighing in at one-tenth the weight of a concrete manhole. This lightweight design also makes them easier to install. They are also popular due to their environmentally-friendly nature and their durability.