Manhole Covers Ductile Cast Iron GGG50 D400

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China main port
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Min Order Qty:
500 pc
Supply Capability:
200000 pc/month

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Item specifice:

Material: Ductile Iron Cross Sectional Shape: Round,Square Thickness: 50-100mm

Product Description:

1.Ductile Iron Manhole Cover Description :

A manhole cover sits on metal base, with a smaller inset rim which fits the cover. The base and cover are sometimes called "castings", because they are usually made by a casting process, typically sand-casting techniques.

1.Advantages: Good compressive, bending and impact strenth,anti-corrosion, not rust, long service life  

(at least 30 years). The quality meets the same kinds cast ion manhole covers but the cost is 30% lower than. Contain no metal and no recovery value, anti-theft.

2.Applications: water supply and drainage, fire engineering, natural gas, 

electricity and telecommunications, street lamp and outdoor illuminations.

3.Designs: based on EN124 standard and according to customer's drawing or samples.

4.Color: black, Grey, green, blue and Marble , etc.

5.Inspection: in-house or the third party as per customer's request.

2.Main Features of the Ductile Iron Manhole Cover:

1. Designed structure & pressure dispersion

Arc-shaped bottom structure allows the pressure they bear disperse averagely on the whole surface. Besides, the products are made not by SMC, it was put in several layers of fiber cloth to enhance the structures. So they are stronger than SMC composite manhole covers.

2. Consequences of temporarily overloading

Temporarily overloading may cause smash of concrete covers, seriously deformation, even slightly split. But this will not happen to FRP fiber cloth manhole cover.

3. Safety options

There is no metal contain, directly reducing potential accident or further maintenance costs caused by thieves. Anti-slip surface offer a safe road condition even in extreme weather.

4. Light weight

Compared with cast iron manhole cover, FRP manhole cover is 30% lighter.

Light weight allows more loading per vehicle, more convenient transportation and economical savings.

Allows a safer working condition, which single workers is enough for installation without risk of injury.

3.Manhole Cover Images:

Manhole Covers Ductile Cast Iron  GGG50 D400

Manhole Covers Ductile Cast Iron  GGG50 D400

4.Manhole Cover Specifications:

1) Production information

Manhole cover are manufactured for construction and public use. Manhole cover shall be smooth and free sand holes, blow holes, distortion or any other defects 

2) Material

A) Ductile iron GGG50

B) Grey iron GG20

3) Designs

A) EN124 Class B125 C250 D400 F 900, with different size and grammage, or as  customers' requirement.

B) as per customers' drawing or samples

4) Process

A) Molding boards

B) Hand Casting 

5) Coating

A) black bitumen or epoxy .

B)Coating as per customer's requirement

5.FAQ:

We have organized several common questions for our clients,may help you sincerely:

Q. Can I fit a square manhole cover into a round chamber?

A. Yes, there are a select few manhole covers which are square-to-round, meaning they will fit square or round chambers. 

Q. I have a heavy traffic manhole cover but it has been broken by a forklift, why?

A. Forklifts have solid wheels which apply pressure differently to standard pneumatics and therefore covers must be specially adapted to suit this.

Q. I’ve measured my clear opening size but none of your covers match it, can you offer anything?

A. It’s likely that your cover is quite old and in imperial measurements which are no longer manufactured. However, we can offer bespoke solutions with manhole covers made to the specification you require.

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Cold rolled steel sheet (SPCC), ----SAE1006, SAE1008Features: smooth finish - good mechanical properties, smooth surfaces with fine abrasive lines. Blunt surface treatment with good mechanical properties, fog, matte finish.Purpose: because it contains a small amount of residual elements, corrosion resistance and excellent, so it is widely used in galvanized or colorOn galvanized steel sheet, suitable for hardware products with special surface requirements.
Q:What does "R0.5max" mean in hardware drawing?
The maximum chamfer diameter is 0.5; the general unit is MM, MIN: minimum MAX: maximum
Q:Please tell people where can to buy genuine hardware accessories?
To hardware mall, to the regular store. Distribution of various brands of shops.
Q:What does the home improvement hardware include? What are your buying skills?
nail1, characteristicsSteel nails are the most common type of nails, there is no special tools, mainly used for hand nails of some wooden shelves, etc..There are no special tools for cement nails, mainly in hand nails, cement walls and so on.Special nails with thread, mainly used for nail skirting line, thread structure is not easy to loose.
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The hardware store, store the following tools: saws, drill, screwdriver, screws, faucets, locks, pipes, wires, such as pump barrel.
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Lock, hinge; if there is hanging sliding door, the pulley and the slide
Q:What does a hardware factory do?.
Hardware: traditional hardware, also known as "hardware"". Of five metals: gold, silver, copper, iron, and tin. By artificial processing, you can make knives, swords and other art or metal devices. The hardware of modern society is more extensive, such as hardware tools, hardware parts, daily hardware, construction hardware and security products.
Q:What kind of hardware installation is there in order of home decoration?
General bought the house, it is necessary to consider the new home decoration, sometimes is not assured decoration workers careless, sometimes in order to save costs, part of hardware will be to install yourself, if you usually do not work with these objects will be optimistic about the installation essentials, not just random installation, because of the small hardware are connected carefully selected furniture, Huaihua hardware Xiaobian bring you all kinds of hardware installation steps, do not seek the most, only hope for help.
Q:How do you do the hardware business?
Learn to take advantage of. For small and medium enterprises but linked to large orders can find some idle plant or equipment, in order to save the cost of investment, only need to put technology and human resources, so you can earn more profit. Once there is a market crisis, we can flexibly do a good job of market transformation, so as to avoid blind expansion.
Q:How to inquire about the price of hardware products? How much is the gross profit of hardware products? Thank you
Gross profit does not know, but you can go to the hardware product supply, purchase price and so on to make some understanding, and then make a decision

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