The manhole grate is also known as nodular cast iron grate and nodular cast iron rainwater grate, compared with the resin composite and cement, which has good pressure resistance and is not easy to destroy.
Not only good pressure resistance, durable, but also beautiful appearance, fair price, is an irreplaceable and reliable product.
Manhole grate purpose
Mainly used for: municipal roads and general road drainage facilities, factory drainage ditch cover, basement drainage ditch, general building drainage facilities and inspection manhole facilities.
Type of manhole grate.
1. ordinary cast iron grate: It is a steel lattice plate.
2. pipe type cast iron grate: It is a steel lattice wrapped with steel pipe.
3.U cast iron grate: A steel lattice wrapped with angle steel.
4. Anti-proof cast iron grate: Live the angle steel frame in the reinforced concrete, and then put the steel lattice plate into the angle steel frame.