Sand Casting Manhole Cover of Ductile Iron

Water Grate Manhole Cover Grating for Tree Guard

Manhole Cover Application
a. Underground Electrical Installations: Draw pits, Traffic lights, Street lighting, Fiber optic cable ducts;
b. Telecommunications: Connection chambers, Water, Gas, Petrol-chemical installations.
c. Urban Building Solutions: Pedestrians and comparable areas, Car parking decks, Gully tops.
d. Road Construction: Road cover and the load is suit for all the road vehicles.

Specification of Manhole Cover
All the sizes of manhole covers are available in the following load bearings:
1. 5 tons (A 15) / 2.5 tons / 5 tons / 10 tons / 12.5 tons (B 125) / 20 tons / 25 tons (C 250) / 40 tons (D 400)

Circular	Rectangular	Square
300 mm	300 mm x 270 mm	300 mm x 300 mm
400 mm	600 mm x 450 mm	400 mm x 400 mm
500mm	700 mm x 500 mm	450 mm x 450 mm
600mm	800 mm x 450 mm	500 mm x 500 mm
690 mm	900 mm x 450 mm	600 mm x 600 mm
900 mm	900 mm x 600 mm	675 mm x 675 mm
1000 mm	990 mm x 1220 mm	750 mm x 750 mm
1100 mm	950mm x 750mm & 600mm x 750mm	800 mm x 800 mm
	(2 covers with single frame)
	675 mm x 2210 mm	900 x 900mm
	(3 covers with single frame)
	675 mm x 1440 mm	900 mm x 900 mm
	(2 covers with single frame)	(2 covers with single frame)
	800 mm x 1600 mm	1000mm x 1000mm
	(2 covers with single frame)
		1200mm x 1200mm
		1500mm x 1500mm

Product Parameters
Drai Grating
Long .FrameAxB(mm)	LongcoverLxL(mm)	Height(mm)	sub-holessize	Class
420x220	400x200	20	100x10	B125
500x300	480x280	20	100x10	B125
500x500	480x480	40	90x10	B125
600x400	580x380	50	200x10	B125
500x300	480x280	150	100x10	C250
500x500	480x480	130	100x10	C250
510x300	490x280	130	100x10	C250
550x300	530x280	95	100x10	D400
500x500	480x480	130	90x10	D400
600x400	580x380	160	200x10	D400

1)Specifications

Ductile Iron Manhole Covers Ductile Iron Manhole Covers for Municipal Works:

1. Process: Sand Casting, Investment Casting (Precision Casting/Lost-Wax Casting).
2. Casting experience: 10years, OEM service available
3. Surface: Blackening, galvanize, plating, painting, etc.
4. Material: QT, iron, steel
5. Technology: Sand casting
6. Advantages: Delivery on time, according to the demand for materials
7. Packing: Wooden case or as your requirement.
8. Deliverywithin 20 days after receiving last confirm information.
9. Production Capacity: Sand Casting 2000 tons per month, Investment Casting 120 tons per month.
10. Certification: ISO 9001: 2008.

Characteristics of our manhole cover:

1. Material: Cast gray iron, ductile iron.

2. Shape: Round, square, rectangle and triangle.

3. Diameter: From 200mm to 1200mm.

4. Weight: From 7kg to 154kg or according to customers\' requirment

5. Packing: In wooden pallet with plastic layer

6. Annual output: 10, 000 tons

7. Coating: Black bitumen or Coating as per customers\' requirement

8. Use: Municipal engineering, Traffic, pavement, electronics, telecom, cable, petroleum, chemical industry, or drainage system and industrial facilities of valve well.

2)Manufacturing process

1. Sample or Drawing by customer
2. Tooling proposal&Discussion
3.3D Tooling Design
4. Tooling production
5. Rough parts manufacturer
6. CNC Machining
7. Fitting&Finish
8. Tooling Measurement&Check
9. Assembly
10. Trial Production
11. Correction
12. Final Trial
13. Samples Inspection
14. Sample Approval by customer
15. Tooling Approval
16. Ductile iron sand casting


3)Company Profile:
We mainly undertake the casting parts, machined parts and other products. Our Import and Export Department have many years experiences of foreign trade, products are mainly exported to the United States, Denmark, Italy, Russia, Australia etc.




4)Typical products:
Scaffold fittings, Template parts, Railway fittings, ring flange, electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.
5)quality Control



Quality First, Pric Best, Service Foremost!
We assure you of our best services at all times!

Item	manhole covers
Size	DN100-1000mm
Surface treatment	black painted, oil, painting
Shape	square, round
Material	ductile iron, cast iron, QT500
Heat Treatment	can be as your requirement.
Advantages	Delivery on time,  according to the demand for materials
Packing	wooden case or as your requirement.
Delivery	within 30 days after receiving last confirm information.