manhole cover/grating

DUCTILE   CAST  IRON  MANHOLE  COVER  

product	model	material	color	application
round 600 ductile iron manhole cover	round 600	ductile  iron	black	motorized vehicles, municipal pipelines, communications, power and water supply and other projects

    DUCTILE  CAST  IRON MANHOLR  COVER  TRAITS   1. Put damage: This is the biggest characteristic of ductile iron manhole covers, ductile iron manhole covers can be heavy pressure 36T/60T, light can be confined 21T. Even if the load pressure exceeds its limit, ductile iron manhole cover cast iron manhole cover is not as common as broken, but a slight deformation of the car and pedestrians has a certain security.   2. Anti-shock:  only through the mouth of the Manhole set to U-shaped, with a T-type synthetic rubber, U-shaped slot embedded in the contact Manhole covers and the process in order to cushion and reduce the vibration force.   3. Anti-slip: 3mm tread covers convex surface, and thus play a good non-slip effect.   4. Anti-impact: Manhole covers the contact with the colossal surface, directly on the T-rubber, and dealt with gently, to eliminate noise.