• Manhole Cover Ductile Iron EN124 GGG40 C250 DI System 1
  • Manhole Cover Ductile Iron EN124 GGG40 C250 DI System 2
Manhole Cover Ductile Iron EN124 GGG40 C250 DI

Manhole Cover Ductile Iron EN124 GGG40 C250 DI

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
1000 pc
Supply Capability:
100000 pc/month

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Specification

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

1,Cast Iron Manhole Cover Description :

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.

2,Main Features of the Ductile Iron Manhole Cover:

1) Product information:
Manhole Covers are manufactured for construction and public use. Manhole Covers shall be smooth and free from sand holes, blow holes, distortion or any other defects
2) Material
a) Ductile Iron GGG500-7 & 400-12
b) Grey Iron GG20

3) Designs .
a) EN124 A15, B125, C250, D400, E600 and F900
b) A60005 for casting design
c) Major standards designs available
d) As per customers' drawings or samples
4) Process
c) Molding boards
d) Green sand with hand molding 

3,Manhole Cover Images:

 Manhole Cover Ductile Iron EN124 GGG40 C250 DI

Manhole Cover Ductile Iron EN124 GGG40 C250 DI

4,Manhole Cover Specifications:

 Material
A) Ductile iron GGG50

B) Grey iron GG20                                                                           
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
Process
A) Molding boards

B) Hand Casting 

Coating
A) black bitumen or epoxy .
B)Coating as per customer's requirement

Different accessories are available 

Packing:
Wooden case or wood pallet, or as per customers' requirement 

5FAQ:

We have organized several common questions for our clientsmay 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.

Q. The project I’m working on requires a manhole cover with a quality finish, what’s available?

A. Naturally, galvanised steel of black polypropylene aren’t always ideal, and so we offer brass or stainless steel edging, as well as complete stainless steel covers. 

Q: Is the cast steel a casting part?
Yes, molten steel is poured into the mold and cooled to become a casting. Can also cast iron, cast aluminum, plastic casting.
Q: What is the difference between forging parts and casting parts?
No, it's called die castingDifference: the die casting parts are simple in structure and large in batch sizeCasting: the use of a wide range of structures without restrictions
Q: What kind of casting process is used for cast iron parts? And what are the cast steel parts adopted?
The main content of red sand table (Institute of soil science, China) silica 79.4%. three 1.48%. three 10.55%. two aluminum oxide iron oxide, calcium oxide 0.85%. Magnesium Oxide 0.52%. 1440. refractory mud 3.06% LOI 1.98% red sand with high silicon content, permeability is strong, durable, high refractoriness, good angle, low moisture content, less mud the casting finish is high, the basic requirements of sand should meet the following requirements: Casting of high purity and cleanliness, with silica sand as an example, iron sand SiO2 content of more than 90%, the big steel casting requests the SiO2 content of more than 97%; the high refractoriness and thermal stability; the suitable particle the shape and particle composition; it is not easy to be wetted by the liquid metal; cheap. The particle shape and composition of casting sand particle shape and particle composition permeability properties such as mobility, sand compaction, permeability, strength and resistance to liquid metal effects, is an important indicator of the quality of casting sand.
Q: What is the reason for 304 stainless steel precision casting parts to be changed?
Mainly because of the cooling shrinkage caused by internal stress caused. There is the change of temperature distribution in materials element imbalance, is typical of surface and internal, thin wall and thick wall, bottom and top.
Q: Cause of choking of casting parts
Is it boiling from the picture? Does it sound like a fire? If not, it's not choking. I feel like choking. The gas doesn't drain out
Q: We are small castings, the need for surface treatment of shot blasting machine, about how much?
The choice of shot blasting machine, this is according to the workpiece size, yield, whether can collision, and the working time and other factors considered, while the price of different blasting machine are not the same, but the vast majority of small castings used crawler shot blasting machine, according to the comprehensive consideration of factors such as yield, size of workpiece commonly used on the market the crawler shot blasting machine has Q324, Q326, Q328, Q3210, and each time the amount of their treatment were 125KG, 200KG, 400KG, 600KG, the specific use of what types also need to be determined according to the actual situation
Q: What kind of flaw detector is better for casting parts?
If the casting is very small, can be used for fixed magnetic detection machines, of course with fixed magnetic powder the testing machine, the best first contact the manufacturers, because the fixed magnetic particle testing machine belongs to the non-standard equipment, according to the workpiece size, different shape, manufacturing daily inspection and measurement.
Q: What are the general technical requirements for casting parts?
No matter what kind of material casting, there are the following major requirements:Material requirements. Mainly hardness, tensile strength, elongation, impact toughness.Two, dimensional accuracy and shape accuracy. Different castings have different requirements. Different sizes and geometric tolerances and different tolerances are adopted.Three, according to the use requirements, the casting of other defects, acceptance requirements. Such as holes, sand holes, shrinkage, slag, sand, crack.........Four. Requirements for defect repair.
Q: Is 316 casting better than 304 casting?
The degree of difficulty in the process of casting depends mainly on the structure, precision requirements, and hardness of the casting. It is comprehensive. There is no simple comparison of the material to determine the degree of difficulty in processing
Q: The difference between sheet metal and casting parts
Casting parts are made by casting (followed by a variety of processing), the shape can be simple, can also be very complex, usually large parts, as a base, bed, work table, and so on, good seismic performance.

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