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
-
Почему Shandong Nuoer — ведущий производитель трубы из нержавеющей стали?
-
Are You Ready to Discover the Perfect Custom Container Homes for Sale?
-
為什麼現代辦公室都需要「辦公室防眩光膜」?XPELVision 隱私保護膜經銷商深度解析!
-
Mastering Efficiency with Duplicate Code Remote Control: The Key to Streamlined Operations
-
Transforming Your Space: Innovative Solutions for Covering Ceiling Tiles