• Ductile Iron Manhole Cover  for Industry with Heavy Duty System 1
  • Ductile Iron Manhole Cover  for Industry with Heavy Duty System 2
  • Ductile Iron Manhole Cover  for Industry with Heavy Duty System 3
  • Ductile Iron Manhole Cover  for Industry with Heavy Duty System 4
  • Ductile Iron Manhole Cover  for Industry with Heavy Duty System 5
  • Ductile Iron Manhole Cover  for Industry with Heavy Duty System 6
Ductile Iron Manhole Cover  for Industry with Heavy Duty

Ductile Iron Manhole Cover for Industry with Heavy Duty

Ref Price:
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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
100 set
Supply Capability:
4166 set/month

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Product Description


 

1) Material 

a) Ductile Iron GGG500-7 & 400-12 

b) Grey Iron GG20


2) 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 

3) Process 

c) Molding boards 

d) Green sand with hand molding 


 

Ductile Iron Manhole Cover  for Industry with Heavy Duty

Specification


Item No.ClassClear Opening(mm)Frame Size(mm)Frame Height(mm)Unit Weight (kg/set)
D60D400500*500600*600100
55
D55D400450*450550*55010047
D50D400400*400500*50010038



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.

 

 

Packaging & Shipping


 

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

 

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

 

 

Ductile Iron Manhole Cover  for Industry with Heavy Duty

Ductile Iron Manhole Cover  for Industry with Heavy Duty


 

Our 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!

 

FAQ


 

1. How about your price?

  A: As one of famous manufacturers of Ductile iron products inChina, Our prices are very favorable and competitive. The customers from all-over the world.


2. Can I request to change the form of packaging and transportation?

  A: Yes, We can change the form of the packaging and transportation according to your requirement, but it maybe let your purchasing cost changed also.

 


Q:When the blank is a casting, the margin is evenly distributed, how should rough machining?Please help friends from mechanical classes.There is another problem: in the NC milling plane contour machining, when the rough margin is large, how to deal with.Who can help in time, add 20 reward. Urgently!!
Problem one,1, according to drawings, castings, material requirements and machine power, choose the right diameter of roughing tools, and can process this material blade type.2, according to the actual size of the casting blank, calculate the number and path of the knife, pay attention to small cutting depth, large feed, cutting width, to ensure that the tool diameter 80 - 90%, the amount of not full knife cutting, this tool and machine tool damage.Question two,If they can not change the casting blank allowance under the condition that the quantity large diameter cutter, such as milling cutter main angle 7560 degrees can give reasonable processing parameters, the same cutting depth should not be too large, because in the same machine power, tool diameter increases, cutting depth will need smaller.
Q:How can the casting be free of trachoma?
3, the gate is not facing sand core, flush sand core, will cause trachoma.
Q:What are the casting parts tested?
The surface brightness, appearance, size, chemical composition, weight, material, surface defects, internal defects, seals need to be checked, leakage, etc.
Q:There is a little trace of polishingShock polishing is even worseElectrolysis can not be uneven, there is a slight bump
German winter three step mirror polishing 2013 new processYou can free proofing!
Q:Casting blank in the cooling process to release a large amount of heat energy, what can be recycled?
General Casting Factory Casting Division will be in your chart marked on shrinkage and processing margin figure (usually with red and green pen) to the patternmaker production of wood or other material mould diagram.
Q:What's the cause of the choking of the casting?,
2. when casting mold exhaust condition is not good, in the casting material use consider whether and hinder its gas permeability; in the process to consider to release more pores, multi venting; core exhaust is particularly important.
Q:What's the effect of casting copper?
Copper is one of the main corrosion resistant alloys. When the mass fraction of copper in cast iron is from 0.25% to 1%, the corrosion resistance of copper in the industrial atmosphere can be obviously increased. But copper has very little corrosion resistance in lye or salt solution.Copper can increase the flowability of molten iron and improve its casting ability remarkably.Copper can increase the coercive force and residual magnetic force, but the permeability is not affected.Combined use of copper with other alloy elements, such as copper chromium, copper chromium molybdenum, copper molybdenum, copper manganese, copper vanadium, can achieve greater results.
Q:Why should pig iron be used in casting?
Not necessarily is iron, steel, stainless steel, aluminum, copper can be cast iron, is cheaper, and better properties of cast out, for example, is not easy to rust, high strength, easy processing and so on, and is the only iron iron cast out, it is not necessarily the raw pig iron, plus some other material
Q:Selection of hydraulic press is the casting parts and steel plate welding, how to choose?
Casting parts in one shape, the overall processing in this regard than steel plate welding better. The same price is much more expensive than steel. Large hydraulic presses seldom have casting parts.
Q:Why does the surface of stainless steel casting mirror mirror ripple?
Those should be head prints. If required, it would be better to throw with a single grinding head.

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