The assembly structure size 1, the manhole cover and the bearing should meet the requirements of GB6414, the tolerance level should not be less than the provisions of GB6414-1999 CT10, and to ensure that the resin covers and the bearing interchangeability.
2, the bearing capacity of resin covers no less than 180KN, damage the bearing capacity of not less than 250KN, allowing for residual deformation (1/500) *D. The bearing capacity of resin covers not less than 90KN, damage the bearing capacity of not less than 130KN, allowing for residual deformation (1/500) *D.
3, material requirements: resin covers mainly used polymer and filler reinforced material. Polymer is a polymer material and its recycled materials, reinforced materials for a variety of granular, fibrous materials and recycled products of various metals and components.
Ji'nan Wanshun Casting Industry Co. Ltd. Shandong ductile iron manhole cover to provide technical support, more exciting content, please enter: http://www.kpp647.com, we will love to answer your questions.