Summary:
In the past, decoration companies often ignored the quality problems of the manhole. The first common method was to use wood or T-shaped keel to make......
In the past, decoration companies often ignored the quality problems of the manhole. The first common method was to use wood or T-shaped keel to make the manhole on site. This method led to the manhole easy to be damaged, cracked and deformed, protruding outside (Ming style manhole), the specifications and sizes were not unified, the installation and repair period was extended, and the overall appearance was affected.
Later, due to the continuous innovation of the market, some domestic manufacturers, after years of unremitting efforts, used high-strength gypsum, glass reinforced fiber, aluminum alloy as the base material, and extruded into gypsum manhole (industry name: Gypsum double aluminum edge inspection manhole), which formed a perfect whole with ceiling materials, unlike other materials (hole) has obvious connection protrusion, affects the beauty, will make its decorative effect greatly improve the grade and grade, fill the gap in the domestic market.
As the domestic mainstream decoration companies began to widely use the finished product manhole, four mainstream manholes (aluminum alloy manhole, aluminum alloy composite manhole, aluminum alloy composite lower flap manhole and wall manhole) were derived according to the decoration demand.
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