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

Ductile Iron Manhole Cover of Light Duty Made in China

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

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Item specifice

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

Product Description:

 


1) Designs: based on EN124 standard and according to customer's drawing or

samples.


2) Applications: water supply and drainage, fire engineering, natural


3)Surface treatment: Painting


4)Process: Casting. Deburring .Drilling .threading


5)Certification: ISO9001:2008


6)Standard: EN124 Standard







Advantages:

 

1.Higher quality /higher tensile
2.Higher security /long life

3.Possibilities of new locking systems





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 of Light Duty Made in China







Specification:



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





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!


6. Professional technical support with free charge.






Pictures:









 

FAQ:

 

1. What is your products advantage?


A. All kinds of size as customer's requirements;


B. Small quantity trial order is welcome


C. Customized design is available and free, Such as Color, Logo, Panel, Load and Dimension etc.


D. Quality control and promptly delivery


E. Good after sales service


2. What is your payment?


T/T, L/C, D/P Western Union or as customer's requirements.


3. How about the shipment?


A. Small quantity you can choose by air


B. Less than one container you can choose LCL shipment by sea


C. One container or more than one container you can choose FCL shipment by sea.

 




Q:Why do casting parts have air holes?
There are many reasons for casting porosity, mainly due to:1. smelting process is unreasonable, metal liquid absorbs more gas;2. the gas in the mold invades the metal liquid;3. from the mold is more water brush, core dry;4. the casting has poor ventilation;5. ladle tools are not dry.Wait。
Q:It is generally said that cast iron is re smelted by pig iron. My question is..:1 pig iron for melting iron, is directly cast into products (such as bed cover, etc.); or that is just the first pig iron smelting iron casting, such as to cover, bed and other products, will once again cast iron melt to casting?2, there are many castings to the engine. Are these castings made by the engine manufacturer themselves or bought by others?There is no need to answer all. Thank you!!!
The first to ask, such as casting end cover, bed and other products, is to put the iron melting and casting againThe two question, their casting castings manufacturers than to buy professional casting factory production, production quality more security professional.
Q:What is the casting material?
Commonly used gray cast iron, malleable cast iron, ductile iron, cast steel, etc., non-ferrous metal casting copper alloy, casting aluminum alloy, casting zinc alloy, etc..
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'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 does the surface of stainless steel casting mirror mirror ripple?
Because the grinding machine is layer by layer. And the material inside the casting is not completely uniform.
Q:I often see Waixiejiagong drawings, casting, how to distinguish the latheman.
Casting rough drawings generally no processing symbols, processing drawings indispensable is processing symbols!
Q:When there is no flaw detection for large casting parts, is there any crack inside?
According to the industry standards, within the scope of the standard requirements to determine whether the product is qualified
Q:What's the cause of the choking of the casting?,
Causes of choking fire:1., casting material in the pouring of gas;
Q:There is a little trace of polishingShock polishing is even worseElectrolysis can not be uneven, there is a slight bump
Buffing should be better, to see how your embryo, but a bit difficult

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