OEM/ODM China Grey Iron Casting And Machining - SPRING SLEEVE GRATE – Duspart

SPRING SLEEVE GRATE PRODUCT DESCRIPTION We according to the ductilly feature of the duction iron's in the open both sides and opposite, we design it triangle spring stucture . prevent covers take off and dislocation, also open arbitrarily etc. function: slip lines, anti noise, effectively reduce the noise impact manhole cover and base. APPLICATION Use non-toxic water-solubility black paint INSTALL PLACE Widely used in municipal, water conservancy, electricity, highways, etc.