• Ductile Iron Manhole Covers with Competitive Prices Made in China System 1
  • Ductile Iron Manhole Covers with Competitive Prices Made in China System 2
  • Ductile Iron Manhole Covers with Competitive Prices Made in China System 3
  • Ductile Iron Manhole Covers with Competitive Prices Made in China System 4
  • Ductile Iron Manhole Covers with Competitive Prices Made in China System 5
  • Ductile Iron Manhole Covers with Competitive Prices Made in China System 6
Ductile Iron Manhole Covers with Competitive Prices Made in China

Ductile Iron Manhole Covers with Competitive Prices Made in China

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Loading Port:
Dalian
Payment Terms:
TT OR LC
Min Order Qty:
100 kg
Supply Capability:
4100 kg/month

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Specification

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

Product Description



1. Material: cast iron,ductile iron,malleable iron

2. Duty:EN124 A15 B125 C250 E600 F900

3. Color:gray

4. Design:We can provide OEM services

5. Expressway, sidewalk, park, garden, amunicipal pipeline, telecommunication, water and electrical power projects all will be avialable.


Packaging and Delivery



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

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


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


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Company Information



CNBM International Corporation (CNBM International) is the most important trading platform of CNBM Group Corporation,state-owned company under the direct supervision of State-owned Assets Supervision and Administration Commission of the State Council.

In line with the business, CNBM International launched E-business platform Okorder.com.


FAQ



1.Can I get free samples?
A: Yes, we can provide you the free samples, but you need to bear their own delivery costs.
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 request, but you have to bear their own costs incurred during this period and the spreads.
3. Can I request to advance the shipment?
A: It should be depends on whether there is sufficient inventory in our warehouse.
4. Could you specially design and produce for clients?
A: Sure, we have all kinds of professional engineers.We can design and produce special products according to customers' request. Such as: special size, special control, OEM, etc.

Q: What are the factors affecting the machining process of the casting material and structure?
The impact on the machining is obvious, it should be the material and heat treatment of the castingCarbon steel parts should be treated by heat treatment (annealing) without special conditions. It can effectively prevent the uneven hardness and hard points. It is easy to turn.
Q: Is the cast steel a casting part?
Yes, molten steel is poured into the mold and cooled to become a casting. Can also cast iron, cast aluminum, plastic casting.
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: 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?
There are several casesThe first hole with a diameter of less than 4MM is generally not done, or as a hole location only for a period of less than 10MM.Second for the big hole, some of the reasons for the holding force, we must increase the slope, direct tapping is unlikely, so it still needs post-processingThird for products with high tightness requirements, some cores need to be made even if they are very small, so they can be tapped directlyFourth, some due to technical requirements, regardless of the size of each other's requirements must be made, there is no wayThe above methods are common, and they will encounter many small problems in actual production.
Q: Casting parts have poor surface finish. What sand is used to make them?
Now resin sand, coated sand and other processes are also very good surface.
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?
3, the resonance method is cast on its resonant frequency vibration 1060ndn, to eliminate the residual stress in casting.
Q: What kind of flaw detector is better for casting parts?
Casting using the detector test, you must first determine the detection process, such as the detection of surface and near surface crack defects, such as casting, recommended by CYD-3000, or CYD-5000 mobile magnetic testing machine for testing.
Q: What reason is the bronze statue choking fire?
The casting process in boiling phenomenon, is the setting of the exhaust hole positioner position or number is not reasonable, the air cavity can not be discharged, overwhelmed by a material inlet, reflux, change mould, sincerely help you look forward to adopt,
Q: How to solve casting defect casting?
Prevention methodReduce the gas in the metal liquid and oxidize the slag, improve the fluidity of the metal liquidIncrease pouring temperature and pouring speed, strengthen slag collection, slag block or bottom pouring bag, teapot ladle pouring, can not cut off when pouring, prevent the slag from blocking the nozzle, and cause the casting to breakIncrease the sprue and sprue height, increase the runner section area and the sprue number, and improve the filling speed and the metal hydrostatic headImprove the casting design and increase the thickness of the thin-wall part of the castingChange the pouring position and pouring system, the casting thin wall plane is located at the top and away from the gate, to prevent the filling of liquid metal splashing, eddy current, avoid metal stream in the casting thin sections or core support, cold iron, insert the confluence, when necessary, take horizontal vertical pouring cold or inclined castingIncrease the permeability of core and sand, strengthen the exhaust of mould, and the quantity of air outlet and riser should be enoughChange the size and location of the core, the inner cold iron, the core support, the internal cold iron, the insert should be no rust, no oil pollutionCheck the type, tight box, press the operation of iron is safe, to prevent running fire
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.

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