• Cast Iron   Concrete Manhole Cover - OEM System 1
  • Cast Iron   Concrete Manhole Cover - OEM System 2
  • Cast Iron   Concrete Manhole Cover - OEM System 3
  • Cast Iron   Concrete Manhole Cover - OEM System 4
  • Cast Iron   Concrete Manhole Cover - OEM System 5
Cast Iron   Concrete Manhole Cover - OEM

Cast Iron Concrete Manhole Cover - OEM

Ref Price:
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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1 set
Supply Capability:
3900 set/month

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Item specifice

Property:
very hard / brittle
Density:
7,8 kg/ dm³
Type description:
EN-GJS-400/-700
Elongation:
< 1 %
Tensile strength:
500 – 1100 N/ mm²
Loading:
400 – 800 N/ mm²

About us


We take pride to introduce ourselves as the leading manufacturer and professional supplier of various Ductile Iron Manhole covers in China with total annual capacity 50,000 MT.

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 



Specifications

Cast Iron   Concrete Manhole Cover - OEM

1.Standard:ISO 9001 EN124 D400
2.Service:OEM
3.High quality
4.Made of ductile


Main Features:Cast Iron   Concrete Manhole Cover - OEM

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 GGG500&400-12
B) Grey iron GG20
3) Designs
a) EN124 Class B125 C250 D400 ,with different size and grammage, or as per customers requirement
b) Major standards designs available
c) as per customers' drawing or samples


Advantage of ductile iron


Higher quality /higher tensile
Higher security /long life

Possibilities of new locking systems


Packaging and Shipping

Cast Iron   Concrete Manhole Cover - OEM

Packaging: Details Pallet with bubble film, Carton or with pallet,

Delivery Detail: 8 days if your order is 20"container


Cast Iron   Concrete Manhole Cover - OEM


Cast Iron   Concrete Manhole Cover - OEM



Cast Iron   Concrete Manhole Cover - OEM




FAQ

About Sample

Q : Can I get free samples?

A: Yes, we can provide you the free sample, but you have to bear the delivery costs.

About Package

Q: Can I change your package Way?
A: Yes, we can make the form of the package and transportation according to your request, but if any additional charge occurs, you have to pay for it.

About Customer Logo

Q:  Can I have my own logo on the product?
A: Yes, you can send your logo design to us and send us the authority letter. Then we can cast the logo on body.


Q:Explain the heat treatment effect of casting parts, forging parts and welding parts
The three methods of metal processing have one thing in common. They are hot working, which are different in temperature and range of processing. Ductile cast iron is widely used because of its brittleness and poor impact. Heat treatment of cast iron usually adopts the annealing process, reduce the casting effect: 1 because of the internal stress caused by the thermal expansion and contraction, reduce the deformation after machining, decrease surface hardness, improve machining conditions;
Q:My parts complex, machining costs are relatively high, so want to cast, but the surface needs anodizing, what material will be better?
Yes, the cast aluminium is polarized and gray, but the key problem is to guarantee the quality of the aluminium casting, and the quality of the other aluminium casting is not good.
Q:What is the difference between forging parts and casting parts?
The casting parts are low in cost and short in production period. Because the molten iron has good flow properties, complex shapes can be formed. But because there may be sand holes, pores, shrinkage holes and other defects, the quality is unstable, easy to produce many defects, mechanical properties are not forged well, thus affecting the service life.
Q:How to get rid of casting sand inside casting parts?
Are you saying that in the sand casting cavity? We use the manual blast, he is like a pipe will be automatic shot out of the grit, into the casting cavity, to remove the internal cavity in the purpose of casting sand!
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:Younger brother is to do casting valve, precision casting parts, the valve internal sand serious, but the appearance is very standard, this is why, for God answers, thank you!
If is casting, internal shell mold may be not completely dry, strength is not enough, resulting in shell mold collapse into molten steel.It is also possible that the refractory is not refractory enough.
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:Heat treatment process and purpose of casting parts
Natural aging (also known as Chang Hua): lost in the open, the sun and rain, can have experienced years of wind and frost.
Q:Casting blank in the cooling process to release a large amount of heat energy, what can be recycled?
Casting, do not need to provide a rough casting foundry drawings, according to your chart will put foot margin in the processing needs of the surface, the rest of the size can be found according to the mechanical design manual and manual casting.
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?
You need to confirm what you use tap processing, so as to determine the size of the casting hole

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