composite manhole cover septic tank manhole cover ductile iron manhole cover

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1 set
Supply Capability:
4166 set/month
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(2) Whatsapp: +8617190086776

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Item specifice:

Elongation: < 1 % Type description: EN-GJL-200/-300 Tensile strength: 100 – 400 N/ mm²
Loading: 400 – 800 N/ mm²

Product Description:

Product Description

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

2) Color: black, Grey, green, blue and Marble , etc.

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

 


 

composite manhole cover septic tank manhole cover ductile iron manhole cover

composite manhole cover septic tank manhole cover ductile iron manhole cover



Specification

Item No.ClassClear Opening(mm)Frame Size(mm)Frame Height(mm)Unit Weight (kg/set)
CHB40B125310×310400×40030
10
CHB50B125400×400500×5004017

1. Strong corrosion resistant ability and rigidity, not easy to break.
2.Nodular cast iron products in our company use aluminum film epoxy resin sand process makes the surface more smooth, avoid burr flash do damage to pigs.
3.After improve the technology,we shrink the leak aperture of plate at sow position to 8.5-9mm(At present only we can realize it in the domestic profession) avoid too large leak lock pigs feet and do harm to sow nipple.However the traditional size is 11-12mm,what we do avoid that bad phenomenon.
4.Easy to install and clean,long lifetime.
5.We have many size and  can produce according to customer's  drawings or sample! 

 

Packaging & Shipping

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

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

 

 composite manhole cover septic tank manhole cover ductile iron manhole cover


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.

 3. Could you specially design and produce for clients?

  A: Of course, we have all kinds of professional engineers. We can design and produce special products according to customers' requirements. Such as: special size, special control, OEM, etc.

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Q:How do casting parts remove stress?
Annealing treatment, according to different casting annealing treatment, eliminate thermal stress, if need to restore hardness or increase hardness, and then quenching treatment
Q:What are the general technical requirements for casting parts?
No matter what kind of material casting, there are the following major requirements:Material requirements. Mainly hardness, tensile strength, elongation, impact toughness.Two, dimensional accuracy and shape accuracy. Different castings have different requirements. Different sizes and geometric tolerances and different tolerances are adopted.Three, according to the use requirements, the casting of other defects, acceptance requirements. Such as holes, sand holes, shrinkage, slag, sand, crack.........Four. Requirements for defect repair.
Q:Shandong foundry, casting small pieces of precision casting
Small foundry in Shandong too much, like many of us in Qingdao, then Dongying Changshun investment casting is a home, they are also casting precision casting equipment, specifically what I recommend that local enterprises, far is not convenient,
Q:Cause of choking of casting parts
Choke fire is the process of pouring a large number of gases can not be discharged smoothly, boiling in the metal liquid, resulting in a large number of castings in the pores, and even incomplete casting defects
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:What do you mean by "proofing" in the casting? Do you charge for the proofing?
Proofing? In the casting industry is not called proofing, proofing is generally used in the printing industry, that is, according to the customer's drawings or samples, to do a first piece, to provide customers with the inspection process to meet their requirements;In the foundry industry, providing prototypes is sometimes difficult:1, customers if the provision of mold, it would be best, at this time, sample costs are very low, and almost the same as your regular products;2, the customer does not provide the mold, but in business relationships, your factory and not very sure must take this one, it requires your leadership decision-making, is free or low cost, or by a strict process offer (of course sample);3, not all of the casting process to provide samples are difficult, like lost foam can directly make a white NC prototype, and then assembled pouring, this is her unique advantages, first cost less than the opening process and so on;If you don't understand, you can continue to question me
Q:What's the effect of casting copper?
In general cast iron, the mass fraction of copper below 3% - 3.5% can increase the hardness; but when the cast iron has a tendency to chill, or when there is a hard point of free carbides, the addition of copper decreases the hardness.Copper can be used to improve the wear resistance, abrasion resistance, and shock absorption of cast iron, so it is often used in the manufacture of sliding friction iron castings, such as drilling machine spindle, automobile and tractor, valve tappet, etc.. But in white cast iron or chilled cast iron, adding copper does not make any improvement in its abrasion resistance.Copper for certain heat resistant cast iron and austenitic cast iron can increase the heat resistance and corrosion resistance, copper - chromium composite alloy to prevent oxidation under high temperature in the atmosphere from the skin effect is particularly effective, heat resistance and corrosion resistance of austenitic cast iron containing many mass fraction of 4% ~ 7% copper.
Q:What's the density of casting?
Generally cast iron thick place, density is empty, thin place density a little more.
Q:The casting sand is going on
3, prevention measures(1) to improve the strength of sand mold (core), especially surface strength, high temperature strength, refractoriness, compact, better coating, good core coating and parting surface coating.(2) mould and box can prevent damage;(3) the core should have clearance.
Q:The casting defects of pores, trachoma how to repair?
Metal repair can be used to fill the repair. Airhole 2mm following LT102 recommend the use of liquid metal repairing agent.

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