Manhole Cover Cast Iron D400 600mm for Sewerage

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1000 m.t.
Supply Capability:
200000 m.t./month

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Item specifice:

Material: Ductile Iron Standard: square Power Supply: AC Power
Surface Treatment: Zinc Plated

Product Description:

1.Cast Iron Manhole Cover Description :

Manhole covers are often made out of cast iron, concrete or a combination of the two. This makes them inexpensive, strong, and heavy, usually weighing more than 50 kilograms (110 lb). The weight helps to keep them in place when traffic passes over them, and makes it difficult for unauthorised people not having suitable tools to remove them.

2.Main Features of the Ductile Iron Manhole Cover:

·High endurance

·High Strength

·Pressure Resistence

·Anti-corrosion

·Anti-theft

·Good visual effect

3.Manhole Cover Images:

 Manhole Cover Cast Iron D400 600mm for Sewerage

Manhole Cover Cast Iron D400 600mm for Sewerage

4.Manhole Cover Specifications:

1) Production information
Manhole cover are manufactured for construction and public use. Manhole cover shall be smooth and free sand holes, blow holes, distortion or any other defects 

2) Process
A) Molding boards

B) Hand Casting 

3) Coating
A) black bitumen or epoxy .
B)Coating as per customer's requirement

4) Different accessories are available 

5) Packing:
Wooden case or wood pallet, or as per customers' requirement 

6)  Payment terms: T/T or L/C 

5.FAQ:

We have organized several common questions for our clientsmay help you sincerely

Q. Can I fit a square manhole cover into a round chamber?

A. Yes, there are a select few manhole covers which are square-to-round, meaning they will fit square or round chambers. 

Q. I have a heavy traffic manhole cover but it has been broken by a forklift, why?

A. Forklifts have solid wheels which apply pressure differently to standard pneumatics and therefore covers must be specially adapted to suit this.

Q. The project I’m working on requires a manhole cover with a quality finish, what’s available?

A. Naturally, galvanised steel of black polypropylene aren’t always ideal, and so we offer brass or stainless steel edging, as well as complete stainless steel covers.

However, the best way to obtain easy access is to have a bespoke, hinged manhole cover. 

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Q:What are the advantages and disadvantages of car audio modification, wood washer and plastic washer?
Wood washer: divided into three plywood and MDF, they are afraid of water. In particular, the density board, see water expansion, brush waterproof, on the line. Advantages: can make the desired shape, there is no resonance.Plastic gasket defects: fixed shape, difficult to modify, there will be a little resonance, the advantages of super waterproof.If the horn is mounted directly on the plate, it is easy to cause resonance. This resonance will seriously deteriorate the quality. When the speaker vibrates, it will drive the steel plate to vibrate. Therefore, the main purpose of the installation of wood pad is to reduce the resonance, the installation of speakers more solid.
Q:Specific conditions for use of spring washers
The conditions for the use of spring washers are as follows:The application of spring washer, can be applied to the following four standards: standard spring washer (GB93-1987), light spring washer, (GB859-1987), heavy spring washer (GB7244-1987).The purpose of the spring washer is to prevent the nut from loosening. In the national standards are illustrated. The six corners of the slotted nut is matched with the bolt and screw for end with hole, so that the split cotters inserting screw nut from the groove in the hole, preventing the nut macnaught loose, mainly used for vibration load or alternating load applications.
Q:In the design, the bolt connection is necessary to have a gasket?
It is best to add a gasket, there is an increase in friction, it is difficult to prevent aging after the screw.
Q:What is the reason why the rubber washer is small after use?
If you do not have any oil around the gasket, which may be used in the process of gasket compression deformation occurred!If there is oil to the present, it is likely that the oil things out of your rubber additives!
Q:How do you choose the appropriate gasket for bolt or screw connection?
When the bolt is connected, the target of the washer is to disperse the material which is connected with the material, reduce the damage to the surface of the material to be connected when the bolt or the nut is reduced, or prevent the loosening of the bolt. When you choose the gasket can be the actual need to relax the use of spring washers, to protect the surface of the material to be connected, optional plain washers. The principle of choice is that the inner diameter of the washer is slightly larger than the outer diameter of the bolt. Screw connection, the use of slightly larger than the location of the largest screw flat washers can be.
Q:201 stainless steel gasket and 304 stainless steel gasket which is soft
201, stainless steel bars, stainless steel angle, stainless steel channel, such as Chung Chung, an old customer is scheduled to be 10 tons and the current return of the loan is also a little slow, some tight cash on hand. Coupled with his client's request
Q:Nominal diameter 12 washers, outside diameter?
flat washer is usually thin pieces, with different shapes are used to reduce friction, prevent leakage, isolation, to prevent loosening or dispersed pressure.Flat washer is mainly used to decrease the pressure, when some parts of the screw down the axial force is very big, easy to make the pressing dish washer, then can use material and improve the hardness to solve.
Q:Why do some nuts and washers, and some nuts without washers
This is according to the requirements of the guests. Some need to add, some do not need to add
Q:Flat gasket with what material
According to different purposes, there are low carbon steel Q235, 10, medium carbon steel 35,45, spring steel 65Mn, stainless steel A2, F1, etc..
Q:Would like to know the role of flat washer?
to Increase the stability factor to make it more stable

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