• Ductile Iron Round Manhole Cover from Chinese Foundry System 1
  • Ductile Iron Round Manhole Cover from Chinese Foundry System 2
  • Ductile Iron Round Manhole Cover from Chinese Foundry System 3
  • Ductile Iron Round Manhole Cover from Chinese Foundry System 4
  • Ductile Iron Round Manhole Cover from Chinese Foundry System 5
  • Ductile Iron Round Manhole Cover from Chinese Foundry System 6
Ductile Iron Round Manhole Cover from Chinese Foundry

Ductile Iron Round Manhole Cover from Chinese Foundry

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
100 set
Supply Capability:
4000 set/month

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Item specifice

Connection:
Extrusion molding
Brand Name:
CMAX
Material:
Iron
Color:
black, Grey, green, blue and Marble
Service:
OEM Service
Surface treatment:
Painting
Certification:
ISO9001 2008
Specification:
OEM
Standard:
EN124 Standard
Product Name:
Ductile Iron Manhole Cove
Usage:
Construction,mining
Shape:
Square,round
Size:
Customer's Request
Type:
Moulding Press
Process:
Casting. Deburring .Drilling .threading
Place of Origin:
Hebei, China (Mainland)

Product Description

Material: Cast(Grey) Iron (GG 20, GG 25) and Ductile(SG) Iron(GGG 50).

Sizes: 300 mm X 300 mm (11.81" X 11.81") clear opening to 1200 mm X 1200 mm (47.2" X 47.2") clear opening.

Load Rating: A15, B125, C250, D400, E600 and F900

Painting: Black Bitumen, Epoxy and other paint as per  provided by customers.

Other Features: Hinging, Locking provision available, Leak proof and customized designed available.

Ductile Iron Round Manhole Cover from Chinese Foundry

Ductile Iron Round Manhole Cover from Chinese Foundry


Advantages

Good compressive, bending and impact strength, 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.


Our Company

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.


Specifications

Ductile Iron Round Manhole Cover from Chinese Foundry

 

FAQ

1.Q: Are you factory ?
      YES!  We are a professional ductile iron &gery iron casting  Factory in China.
2.Q: How long can you make your quotation:
        Within 3 workdays after received your detailed product information
3.Q: Do you provide OEM Service?
       Yes, we provide OEM Service.
4.Q: What 's  your quotation element?
      Drawing, material, weight and quantity.

Q:How to improve the surface roughness of casting parts?
One is to improve the accuracy of the model; the two is to improve the molding sand mesh. How much is the other relationship?.
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:What are the factors affecting the machining process of the casting material and structure?
Medium carbon steel begins, and the casting can not be punched and tapped directlyStainless steel, ordinary grade (Fe based alloy element content, less) can not do heat treatment. But processing small holes or tapping to heat treatment (solution. In practice, the annealing treatment can also be). There are a lot of stainless steel matrix is not to say, for example, nickel, cobalt and tungsten. And so on.
Q:How can the casting be free of trachoma?
2, pouring temperature should be enough, otherwise the sand can not float up;
Q:What are the casting parts processing engineering?
According to the classification of process methods, sand casting and special casting.
Q:Why should pig iron be used in casting?
Popular name is called pig iron, in fact, is a kind of cast iron without treatment, after casting, in iron elements to add other elements to improve casting performanceIt mainly improves the fluidity, reduces the melting point and reduces the shrinkage.Usually pure iron and cast iron at the eutectic point (about 4.7% carbon content) can be used for castingThere are many kinds of cast iron, usually grey cast iron, ductile iron and vermicular graphite iron......
Q:Casting parts have poor surface finish. What sand is used to make them?
V casting, EPC, precision casting of the surface is good.
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:What are the general technical requirements for casting parts?
What kind of casting do you want to know? Copper parts, iron pieces, aluminum pieces??? Their casting conditions are different.
Q:Would you please tell me how to use casting parts for a year?The cast of an aircraft wing needs to be put aside for a year before it breaks;Does anyone know why?
2, heat aging (artificial aging), also known as stress annealing, is to heat the casting to 550-650 degrees, insulation 2 - 4h, with the furnace cooling to 150 - 200T, and then baked.

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