• Manhole Cover Ductile Iron  EN125 Class C250 System 1
  • Manhole Cover Ductile Iron  EN125 Class C250 System 2
Manhole Cover Ductile Iron  EN125 Class C250

Manhole Cover Ductile Iron EN125 Class C250

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
1000 pc
Supply Capability:
200000 pc/month

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Specification

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

1.Ductile 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.

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

2.Main Features of the Ductile Iron Manhole Cover:                      

1. 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.

2. Long service life

Strong resistance of acid, alkali, weathering, anti corrosion of water, dust, manhole covers used for gas are well sealed which prevent poisonous gas leaking.

Temperature tolerance is at the range of -40°C-200°C.

3. Customer design

FRP manhole covers allow customers’ innovative design, logo, or etc. we have our own design team who can also offer design work for customers.

4. No color fading

The cover is not sprayed in surface but painted in whole material so that the color can keep no fading.

Manholes allow access to underground pipes, cables, meters and facilities.

BS EN124 Standard:

A15: Area which can only be used by pedestrians and pedal cyclists.

B125: Footways, pedestrian areas and comparable parks or car parking decks.

C250: For gully tops installed in the area of curbside channels of roads.

D400: Carriage ways of roads(including pedestrian streets), hard shoulder and parking areas, for all types of road vehicles.

E600: Areas of imposing high wheel loads, e.g. dock and aircraft pavements

3.Manhole Cover Images:

Manhole Cover Ductile Iron  EN125 Class C250

Manhole Cover Ductile Iron  EN125 Class C250

4.Manhole Cover Specifications:

1) Material

A) Ductile iron GGG50

B) Grey iron GG20

2) 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

3) Process

A) Molding boards

B) Hand Casting 

4) Coating

A) black bitumen or epoxy .

B)Coating as per customer's requirement

5) Different accessories are available 

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.

Q: There is a little trace of polishingShock polishing is even worseElectrolysis can not be uneven, there is a slight bump
Use the vibrator to polish the material: the high aluminum porcelain 4cm (with a polishing agent that has an automatic mending function), you go find this polish,
Q: What are the effects of stiffeners on castings, or on welded parts (for 2 tons or less), casting or weldments on stiffeners?
4, the performance requirements of the steel: whether castings or welding parts, there may be quality defects, but the casting will generally be worse than the weldment.You should be able to make a choice in the end.
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: the parts of the threaded hole is casting, casting the hole directly, and then tapping or casting, and then punch 10When the casting is ready, punch it again before tapping it Is the hole casting good or is it punched and tapped on the drilling machine after casting?
If it is not directly cast hole hole, later processing, large pores may be directly cast out,
Q: Why do casting parts have air holes?
First, from the source, tools, raw material drying, in the process of melting into the reaction gas, another influence is pouring process, such as high temperature solidification gas dissolved too much after not excluded. The method can adjust the pouring temperature properly, control the source of gas (drying and controlling the inoculant, especially the content of magnesium), and add cooling iron to change the solidification mode. It depends on what kind of casting you are. You can't make it clear at once. And molding sand relationship is mainly water content and permeability, brush coating resin content.
Q: When there is no flaw detection for large casting parts, is there any crack inside?
Cracks are considered serious levels of defects and should be repaired
Q: In the design of casting steps and precautions, for casting design, we have what experience?.
(3) to prevent generating white grey cast iron, in addition to taking measures from the process, must make the wall thickness is not too thin (some sources indicate that the corner wall thickness above 15mm, metal type casting must be in the corner, for Aluminum Alloy, magnesium alloy casting casting casting Create fillet should not be less than 3-4m, for casting round cast iron, copper alloy mould casting can see table 1.1-32 selection; (5) because of the metal and the core without let, for the convenience of the casting is taken out and the draw out type, slope casting casting should be suitably large than sand casting metal casting. General 30%-50%, it should be pointed out that in addition to the height of the slope of casting size and alloy type, wall, is also related to the casting surface position, where the cooling and contraction and metal surface of casting surface can be designed from the tendency of small inclination, while casting shrinkage tend to be pressed on the surface of metal castings the type should be given greater inclination, all kinds of metal type alloy casting casting casting.
Q: What reason is the bronze statue choking fire?
The casting process in boiling phenomenon, is the setting of the exhaust hole positioner position or number is not reasonable, the air cavity can not be discharged, overwhelmed by a material inlet, reflux, change mould, sincerely help you look forward to adopt,
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.
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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