anti-theft, safe and easily open;Large area for water leakage;anti- impact,high load-bearing capacity

drainage Pit cover is widely used in the urban road, the square, the botanical garden, the wharf, the airport, the parking lot, the road ,each kind of industry, the civil project, etc

1) This product has high load-bearing capacity and good anti- impact property.

2) Cover and frame are joined by hinge. It is anti-theft, safe and easily open.

3) Large area for water leakage with hot dip galvanizing surface treatment, attractive and durable.

Drainage manhole cover (articulated) dimensions and heavy table:

 

Drainage pit length	Draing cover type	Size (MM)
		Steel grating				Frame
		a	b	h	model	Angle iron size
300×300	JRG I33-455	400	305	45	G455/30/100	50×50
400×400	JRG II44-455	500	395	45	G455/30/100	50×50
500×500	JRG IV55-405	600	515	40	G405/30/100	45×45
600×600	JRG IV66-405	700	605	40	G405/30/100	45×45

NOTES:

the drainage pit length ronging from 300×300mm to 600×600mma means the steel grating length b means the steel grating widthh means the steel grating height