cast iron grates

Specifications

1.Load-bearing great
2.Superior safety performance
3.Opens conveniently
4.ISO9001, EN124
5.Professional manufacturer

Main products: manhole cover, gully grate, trench grating, surface box.

 

1----Anti-theft: cover and base frame integrate connection, hinge-type opening, sledgehammer hit not break it, completely anti-theft.

2----Load-bearing great: the toughness of ductile iron is fourfold that of ordinary cast iron, close to steel materials, suitable for all kinds of road use!

3----Corrosion resistent: Sewer internal environment complex, filled with various chemical substances, ductile iron does not suffer chemical corrosion, service life more than 30 years.

4---- Opens conveniently: light weight, single unarmed can be open, convenient downhole maintenance!

5----Superior safety performance: It often occurred underground explosion accident, fly up covers scarred passers-by , manhole covers integration connections will not depart from the ground.

 

 

 

paint:	Bituminous paint	Black
packing:	wooden pallet (normal)
material: (ductile cast iron ) GGG50
	Tensile strength: 500 Mpa
	Yield stress: 320 Mpa
	Elongation rate:7 %
	Hardness: HBS170~230
Standard	EN124, UNIEN124, BSEN124