Ductile Iron Manhole Covers With EN124 Standard Made by Professional suppliers in China

Ductile Iron Manhole Covers With EN124 Standard Made by Professional suppliers in China System 1

Ductile Iron Manhole Covers With EN124 Standard Made by Professional suppliers in China System 2

Ductile Iron Manhole Covers With EN124 Standard Made by Professional suppliers in China System 3

Ductile Iron Manhole Covers With EN124 Standard Made by Professional suppliers in China System 4

Ductile Iron Manhole Covers With EN124 Standard Made by Professional suppliers 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. Sample is available for free.

2. OEM and ODM are welcome.

3. Free charge of design labels and cartons.

4. 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!

5. Professional technical support with free charge.

6.Packing
Steel or wood pallet, or as per customers' requirements'

Ductile Iron Manhole Covers With EN124 Standard Made by Professional suppliers in China

Specification

Item No.	Class	Clear Opening(mm)	Frame Size(mm)
D90	D400	800*800	907*907
D70	D400	600*600	703*703

Advantages

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

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 Covers With EN124 Standard Made by Professional suppliers in China

FAQ

1. What is your payment?

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

2. 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:Question, such as title, I hope I don't copy the definition of rolling and casting in Baidu encyclopedia, thank you: The performance is too extensive, I think the following several people all fall into the erroneous zone directly, the performance includes a series of aspects:Mechanical properties: tensile strength, yield strength, elongation and contraction ratio of section and impact toughness after etc.

Q:Why do cheap cars like stamping parts instead of casting parts?: Separation process is also called blanking, the purpose is to make the stamping parts along a certain contour line from the sheet metal separation, at the same time guarantee the quality requirements of the separation section. Stamping is a highly efficient production methods, the use of compound die, especially the multi station progressive die stamping process can be completed in a multi machine, realized by belt uncoiling, leveling, punching, forming and finishing automatic production. High production efficiency, good working conditions, low production costs, can produce hundreds of parts per minute. The purpose of forming processes is to allow the sheet to undergo plastic deformation without breaking the billet and to make the desired shape and size. In actual production, a variety of processes are often applied to a workpiece. Blanking, bending, shearing, drawing, bulging, spinning, and straightening are the main types of stamping machines.

Q:For example, casting parts contain many holes, inclusions and other defects, the size and the number of holes exceed which limit is not qualified: For example, the castings shall be in accordance with the requirements of the second types of castings in the technical requirements for aluminum alloy castings of GB/T9438-1999;

Q:Can the casting part be phosphating with the phosphating solution of the pickling board?: If it is Phosphating for painting, it is not necessary, because the surface of the casting is rough and can be firmly bonded with the paint film.

Q:The difference between cement sand castings, resin sand castings and vacuum casting parts: Vacuum casting is the process of using ventilation molds. Molten metal flows into the mold by air pressure, and then removes air to form a vacuum. The casting process is mainly used for small parts or jewelry with exquisite detailsCompared with the traditional clay sand casting, heat hardening resin sand casting production with low surface roughness, high precision, good quality characteristics, dimensional accuracy of resin sand mold after hardening with good rigidity and high, and not easy to deform, so in the choice of process parameters, mechanical processing you can select a smaller margin, thereby reducing the consumption of metal solution and machining cost, which can improve the dimensional accuracy of castings.

Q:What are the casting parts processing engineering?: At present, casting processing, according to metal classification, divided into cast iron, cast steel, casting non-ferrous metal.

Q:Where is the precision casting factory?: The National Precision Casting Factory is generally distributed in Shandong, Ji'nan, Jiangsu, Wuxi, Changzhou, Zhejiang, Guangdong, Panyu, Dongguan.The above are only the main distribution, many of Shandong are made supercharger, and Guangdong to jewelry industry based.

Q:The casting defects of pores, trachoma how to repair?: If the repair after the high temperature resistance, choose LT737 high temperature repair agent.

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:What's the cause of the choking of the casting?,: Causes of choking fire:1., casting material in the pouring of gas;

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