If the customer does not have a specific manhole cover design, our technicians will help the customer design. The design content includes Load class, size, shape, pattern, LOGO, text
- Material: ductile iron according to the requirements of ISO 1083 for Grade 500-7
- The load and deformation should be according to EN124:2015 standard
- The surface of casting should be flat and free from fleash, fin, pore, cold lap, crack and other casting defect.
- Dimension tolerance between cover and frame is in accordance with ISO 8062-CT10
- Cover of surface: 4mm raised; Draft angles: 15 deg
- The cover and frame should be matched free from unnessary gaps.
- Surface finished with bitumen paint.