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

Technical note:

  1. Material: ductile iron according to the requirements of ISO 1083 for Grade 500-7
  2. The load and deformation should be according to EN124:2015 standard
  3. The surface of casting should be flat and free from fleash, fin, pore, cold lap, crack and other casting defect.
  4. Dimension tolerance between cover and frame is in accordance with ISO 8062-CT10
  5. Cover of surface: 4mm raised; Draft angles: 15 deg
  6. The cover and frame should be matched free from unnessary gaps.
  7. Surface finished with bitumen paint.