The standards for manhole molds (i.e., inspection well molds) are mainly based on relevant national and industry standards, covering aspects such as materials, dimensions, structural strength, and production processes.
22S521 "Concrete Drainage Inspection Wells": This is the latest national building standard design atlas, providing systematic guidance on the design, dimensions, structural strength, construction, and installation of inspection well molds, emphasizing safety, durability, and ease of construction.
The mold must be designed with a steel structure according to this atlas to ensure that the formed well body conforms to the specifications.
Key dimensions such as the mold's inner diameter, wall thickness, and connecting holes must be precise, with strict error control.
The standards for manhole molds are based on EN 124 and the CJ/T series of industry standards, and must also comply with the technical requirements of the latest national standard atlas 22S521. In actual production, mold manufacturers also need to conduct customized design and verification based on the specific needs of the project.