• 60x60 Ductile Iron Manhole Cover and Drain Grating System 1
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60x60 Ductile Iron Manhole Cover and Drain Grating

60x60 Ductile Iron Manhole Cover and Drain Grating

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Min Order Qty:
100 set
Supply Capability:
3900 set/month

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Item specifice

Casting. Deburring .Drilling .threading
black, Grey, green, blue and Marble
Moulding Press
Customer's Request
OEM Service
Surface treatment:
ISO9001 2008
EN124 Standard
Product Name:
OEM Products
Brand Name:
Extrusion molding
Place of Origin:
Hebei, China (Mainland)

Product Description
Material: Cast(Grey) Iron (GG 20, GG 25) and Ductile(SG) Iron(GGG 50).
Sizes: 300 mm X 300 mm (11.81" X 11.81") clear opening to 1200 mm X 1200 mm (47.2" X 47.2") clear opening.
Load Rating: A15, B125, C250, D400, E600 and F900
Painting: Black Bitumen, Epoxy and other paint as per provided by customers.
Other Features: Hinging, Locking provision available, Leak proof and customized designed available.


60x60 Ductile Iron Manhole Cover and Drain Grating

60x60 Ductile Iron Manhole Cover and Drain Grating


60x60 Ductile Iron Manhole Cover and Drain Grating

Our Company

CNBM manhole cover regard quality as the essential factor leading to successful business. After years of efforts, CNBM manhole cover have built up great reputation in terms of quality and service among domestic and overseas customers. Our customer come from America, Morocco , saudi arabia, Iran , Algeria and so on

CNBM Ductile Iron manhole cover A15-F900 complying with EN 124 Standard

60x60 Ductile Iron Manhole Cover and Drain Grating

Why imported Composite Manhole cover/Grating from China?
1. Very competitive price, it will save you third or even half cost.
2. Good quality, don't worry much about the quality, actually, most of the building materials you buy from Miami, Dubai, Italy, South Africa or your local market are imported from China. So why not buy direct from?China. The key point is to find a reliable supplier who is honest and professional to take care of the quality and delivery time.
3. Chinahas full range of Manhole covers which Follow En124 for your market, like A15, B125, C250, D400.

Q:In theory, which is more expensive, forging parts or casting parts?
It depends on the structure. In theory, the shape of the forging is relatively simple, but the requirement of internal structure is relatively high
Q:What are the causes of pitting on the surface of a precision casting?
The quality of the shell surface is out of order. Or shot blasting out of question.
Q:Casting parts have poor surface finish. What sand is used to make them?
V casting, EPC, precision casting of the surface is good.
Q:What are the effects of stiffeners on castings, or on welded parts (for 2 tons or less), casting or weldments on stiffeners?
3, weight: if reinforcement in products, casting weight is generally greater than the welding parts (the internal organizational structure and mode of production determines the mechanical properties of materials, so it determines the weight of the product), considering the cost of transportation, certain priority structure.
Q:our factory now produces steel castings in the use of polishing directly after spraying processing, but the powder sprayed 15But the spray powder touched off what is the reason we are not very strict requirements not only need to peel off bubbles can also, because our products are steel castings so we use steam hole sludge put on. Do not know if this spray treatment has no effect to thank friends with us!
Cast iron has not been done, if it is iron, then in the spray before going through strict pretreatment, the surface can not have a little oil dust
Q:Why does the precision casting factory not usually make iron castings?
Jiangyin Lin Xing stainless steel (precision manufacturing) Co., Ltd. to provide professional precision casting
Q:Selection of hydraulic press is the casting parts and steel plate welding, how to choose?
Casting parts in one shape, the overall processing in this regard than steel plate welding better. The same price is much more expensive than steel. Large hydraulic presses seldom have casting parts.
Q:As shown, how do I achieve the tightness test of this product, and achieve industrial production? Seek expert advice.
Precise and tight sealing of the surface to which the test piece is to be tested, equipped with an airtight test instrument, and an electrical control system. You can complete automated testing equipment
Q:What do you mean by "proofing" in the casting? Do you charge for the proofing?
Proofing refers to making the first sample to confirm to the customer
Q:Which surface is coarser for cast iron or cast steel castings? Why?
The surface of the steel is more rough, because the coating sand cast steel cast iron particles compared with graphite coating degree, the other one is to get a better air permeability and collapsibility of sand, the compaction degree is smaller than iron. Roughness mainly depends on the surface roughness on the surface of the sand.

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