Polymer Composite Manhole Cover

Wet market stall drains and supermarket kitchen drains face special challenges. The wastewater often contains vegetable leaves, meat scraps, food waste, and cooking oil. If the slot design is not suitable, debris can easily block the drainage system. This may cause water accumulation and affect daily business operations. Our Dingjian polymer composite manhole cover is designed to solve these drainage issues. The item number is 50030030. The material is composite, with an A15 load rating and a 5 kN capacity. This cover is designed specifically for wet market and supermarket drainage applications.

The slot design on this polymer composite manhole cover is specially developed for wet market drainage environments. We analyzed common debris types found in market drainage systems and optimized the slot shape and layout. The slot width helps prevent leaf-like debris from entering drain pipes while maintaining efficient water flow. The slot arrangement also considers drainage speed and self-cleaning performance. Even when some areas become partially blocked, the remaining slots continue to provide effective drainage. This design achieves a balance between debris control and drainage efficiency.

Oil and acid resistance are important material advantages of this polymer composite manhole cover. Drainage systems in markets often contain cooking oil, food residues, and acidic substances. These materials may damage traditional covers after long-term exposure. Polymer composite materials provide excellent chemical resistance and maintain stable performance. The surface remains durable and attractive even after extended contact with kitchen oil. The lightweight design and quiet operation are also suitable for crowded market environments. Compared with metal covers, composite covers reduce impact noise and create a more comfortable working environment.