• Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China System 1
  • Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China System 2
  • Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China System 3
  • Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China System 4
  • Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China System 5
  • Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China System 6
Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China

Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China

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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) Type:round type and Square type,triangle

2) Coating 
a) Cold applied black bitumen 
b) Without coating 
c) Coating as per customers' requirement 
4) Different accessories are available 
3)Packing 
Steel or wood pallet, or as per customers' requirements'

Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China

Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China





Specification


Item No.ClassClear Opening(mm)Frame Size(mm)Frame Height(mm)
D90D400800*800907*907100
D70D400600*600703*703100


1.Applicable medium:gases,liquids,steam
2.Materail:ductile iron,Gray cast iron

Tested item standad

Anti-breaking strength (Mpa)>14

Impact toughness resistance (kg/cm2)>95

Tensile strength (Mpa)>10

Compressive strength (Mpa)>30

Modulus of elasticity(kg/cm2)>1.4*104

Cold-hot resistance measure<0.4< span="">

Smooth surface and anti-theft


Advantages


Good compressive, water-proof, hot sale in the world,anti-corrosion, long service life (at least 30 years).

Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China


Packaging & Shipping


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

Delivery Detail: 8 days if your order is 20"container, and we will deliver your goods as soon as possible.


Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China



Ductile Iron Manhole Cover With EN124 Standard by Professional Manufacturers in China


FAQ


1. What is your minimum order requirement?
    We will indicate the MOQ for each item in the quotation sheet. we accept the sample and trial order. If the quantity of single item can't reach the MOQ, the price should be sample price.

2.Are you factory ?
   YES!  We are a professional ductile iron &gery iron casting  Factory in China.

Q:Explain the heat treatment effect of casting parts, forging parts and welding parts
Good welding of low carbon steel (alloy), probably because the weld workpiece rigidity, fast cooling, the weld internal crystallization of brittle microstructure (martensite), so after welding or welding process welding using self heat, reasonable arrangement of weld, welding seam and heat affected zone heat treatment. The welding heat treatment is often used to preheat before welding, after welding withasbestos cloth covering slow cooling annealing, reach the purpose, its main function is to reduce the internal stress, improve the weld microstructure of martensite formation, reduce brittle tendency, preventing welding cracks.
Q:Question, such as title, I hope I don't copy the definition of rolling and casting in Baidu encyclopedia, thank you
Service performance: heat conductivity, friction reduction, shock absorption, heat resistance and corrosion resistanceTo compare these properties, it depends on the specific material, structure, and use of the parts. Otherwise, there is no comparisonS
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:What are the casting parts used to test shrinkage holes?
3 fluorescent magnetic powder, this method can also be found in part.
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. It is comprehensive. There is no simple comparison of the material to determine the degree of difficulty in processing
Q:Lathe processing stainless steel casting parts to use what type of tool, the speed into the amount of how much tool angle
There is YW1 best, if not using YG6X, YG8 is ok!The speed should not be high, the greater the diameter, the lower the speed! For example, a diameter of 100 mm, speed is not greater than 80 rpm, each point is good!The main tool is the front angle to be larger, more than 6 degrees, and the groove should be wider and larger to reduce the cutting resistance! When the rear angle is properly reduced and the strength is increased, it is recommended to take 3 degrees.The main components are: spindle box, exchange gear box, feed box, slide box, tool post, tail frame, light bar, lead screw, bed, foot and cooling device.Spindle box: also known as the headstock, it is the main task of the rotary motion of the main motor came through the transmission mechanism of a series of positive and negative spindle to be required two different steering speed, the spindle box gives impetus to the movement of the box. Medium spindle is the key part of lathe. The stability of the spindle on the bearing directly affects the quality of the workpiece. Once the rotation accuracy of the main shaft is reduced, the value of the machine tool will be lowered.
Q:In the design of casting steps and precautions, for casting design, we have what experience?.
Two: the basic structure unit in the design of metal casting type and the parameters selected, usually should also pay attention to: (1) because of the metal type heat quickly, so the metal type casting minimum wall thickness should be bigger than the sand casting, metal type casting alloy minimum wall, different size of castings see table 1.1-31 thick can be selected; (2) the inner wall of the casting internal ribs and the thickness of wall thickness should be 0.6-0.7 connected, or as the inner wall (rib) cold slowly, cracks in the wall at the junction in the casting shrinkage;
Q:How can the casting be quenched and tempered?
Another is the result of pre heat treatment (quenching or annealing) after quenching and tempering treatment, suitable for ZG35SiMNMo, ZG35CrMo and so on. Please tell the casting process is your product and material and then set tempered.: shutup:
Q:What foundry factories are used in the casting parts of China's major automobile manufacturers?
Tangshan Yongding automobile spare parts factory also give a lot of supply, casting factory of Tangshan n to the car enterprises casting wheel gearbox etc.The team of casting experts welcome you to ask questions and accept questions!
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?
If it is not directly cast hole hole, later processing, large pores may be directly cast out,

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