According to the material: there are metal manhole covers, such as cast iron, ductile iron, bronze manhole covers; High strength steel fiber cement concrete well cover; Reclaimed resin manhole cover; Polymer matrix composite material inspection manhole cover, etc.
Divided by shape: mainly round and square. Round manhole cover is not easy to tilt, can better protect the safety of pedestrians and vehicles, often used in urban road administration; Square manhole covers are widely used in rural areas and cable Wells to better prevent rainwater and other liquids from entering.
According to GB/T23858-2009 "Check manhole cover", the manhole cover carrying capacity is divided into six grades, from A15 to F900, which are suitable for different areas, such as green belt, sidewalk, residential district, urban trunk road, freight station, airport runway, etc.
www.cnnewline.com
Shandong New Line Import and Export Co.， Ltd
About Author
You may also like
-
Advancing Packaging Efficiency with Wuxi Jiangjia's Intelligent Mortar Packaging Bag Manipulator
-
Representatives of the 2025 Aluminum Processing Industry Conference visited Huasheng Aluminum to explore new potential for industry development
-
5 Must-Have Features in a Top-Performing Vibratory Plate Compactor
-
為何選擇「防紫外線窗膜」能為生活帶來重大改變？
-
What Makes a Powder Coating Booth Essential for High-Quality Finishes?