• Ductile Iron Manhole Cover of Most Salable Made in China System 1
  • Ductile Iron Manhole Cover of Most Salable Made in China System 2
  • Ductile Iron Manhole Cover of Most Salable Made in China System 3
  • Ductile Iron Manhole Cover of Most Salable Made in China System 4
  • Ductile Iron Manhole Cover of Most Salable Made in China System 5
  • Ductile Iron Manhole Cover of Most Salable Made in China System 6
Ductile Iron Manhole Cover of Most Salable Made in China

Ductile Iron Manhole Cover of Most Salable Made in China

Ref Price:
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Loading Port:
Qingdao
Payment Terms:
TT OR LC
Min Order Qty:
170 set
Supply Capability:
4000 set/month

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Specification

Usage:
Construction
Surface treatment:
Painting
Certification:
ISO9001 2008
Standard:
EN124 Standard
Material:
Iron
Brand Name:
CMAX
Dimensions:
Customer Required
Type:
Moulding Press
Specification:
OEM
Service:
OEM Service
Shape:
Square,round
Color:
Grey, Black

Product Description:


1.Standard:ISO9001,EN124
2.Applicable medium:gases,liquids,steam
3.Materail:ductile iron,Gray cast iron



Specifications:


No.Item No.ClassClear Opening(mm)Frame Size(mm)Frame Size(mm)Unit Weight (kg/set)
1PCE300C250200×200300×30035
8
2PCE400C250300×300400×40040
22
3PCE500C250400×400500×50045
26
4PCE550C250500×500550×55045
30






Features:


1.Higher quality /higher tensile.

2.Higher security /long life.



Packaging & Delivery:


1.Packaging Details: 8-10 sets of a pallet.

2.Delivery Detail: 30-45 days.



Pictures:







FAQ:


a.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. China has full range of Manhole covers which Follow En124  for your market, like A15,B125,C250,D400.

b.How do we start our cooperation?

   If you are wholesaler, please send us the detailed information of the products you are doing, like Cover size, clear opening size, loading Grade, we will give you our best advices. We can start from sample order. 

  Sometimes if meet the size we don’t have, the new mould with your size and design can be considered from us. Let's talk more details about the New Mould and Charges. Then start our Cooperation.




Services:


1. Sample is available for free.

2. OEM and ODM are welcome.

3. Free charge of design labels and cartons.

4. Our products: produced by the hydraulic Press.Meanwhile, a number of experienced workers do the strictly Quality control and have production tracking program. 

5. Our price: we are the factory, we provide the most competitive price with good quality, and large order quantity will get big support by us!
6. Professional technical support with free charge.

7. After the cooperation: Any of your problem will be solved within 24 hours.





Q: How to calculate the price of casting parts?
According to the complexity of the workpiece, material and casting requirements and process yield
Q: Casting parts need to be subjected to the kind of heat treatment after the weldment is finished
Annealing is needed to eliminate stress and refine grain
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: What should I pay attention to when designing a casting structure?
(2) in the prevention of metal mold casting misrun and cold partition should pay attention to the following problems: the structure of A casting thickness should be appropriate not too thin, especially when casting size when not too thin; the B should avoid a big level, because it makes the liquid metal in the casting. Rise slowly, and the air contact surface, easy oxidation, and because the metal type liquid metal heat quickly, quickly lose liquidity, easy to cause misrun and cold lap, slag and other defects; C casting shape should be streamlined to avoid sharp corners and has sharp change connection structure in order to facilitate the flow of liquid metal. 2 in the design of metal castings in a complex shape, if the production process is very difficult, should not affect the casting conditions, try to make the casting has simple shape, strong structure change, removed from metallic die for.
Q: How can the casting be quenched and tempered?
Return, general castings (especially steel castings) commonly used heat treatment process is normalized and tempered. Of course there are completely by annealing or remove stress annealing...
Q: What is the difference between casting and stamping parts?
Separation process is also called blanking, the purpose is to make the stamping parts along a certain contour line from the sheet metal separation, at the same time guarantee the quality requirements of the separation section. Stamping is a highly efficient production methods, the use of compound die, especially the multi station progressive die stamping process can be completed in a multi machine, realized by belt uncoiling, leveling, punching, forming and finishing automatic production. High production efficiency, good working conditions, low production costs, can produce hundreds of parts per minute.
Q: My parts complex, machining costs are relatively high, so want to cast, but the surface needs anodizing, what material will be better?
The common material that can be anodized is aluminum alloy. It is recommended to use casting aluminum alloys, such as ZL102 and ZL105, which are commonly used as cast aluminium alloys. The processing of aluminum casting is easy. After processing, the surface of the whole part can be anodized. The color can be chosen.
Q: What are the general technical requirements for casting parts?
Satisfy appearance quality (appearance defect, quality change, size deviation)Intrinsic quality (composition, properties, internal organization)Service performance (abrasion resistance, corrosion resistance, heat resistance, pressure resistance)
Q: How to solve casting defect casting?
Different defects, different solutions, some shortcomings, the current domestic level can not be resolved
Q: How can the casting be free of trachoma?
3, the gate is not facing sand core, flush sand core, will cause trachoma.

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