• Μanhole Cover for Round Cover Made in China System 1
  • Μanhole Cover for Round Cover Made in China System 2
Μanhole Cover for Round Cover Made in China

Μanhole Cover for Round Cover Made in China

Ref Price:
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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1000 m.t.
Supply Capability:
100000 m.t./month

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Specification

Material:
Ductile Iron
Standard:
Round
Power Supply:
AC Power
Customized:
Customized
Surface Treatment:
Nickel Plated

1.Ductile Iron Manhole Cover Description :
A manhole cover is a removable plate forming the lid over the opening of a manhole, to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.
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
Safety options
There is no metal contain, directly reducing potential accident or further maintenance costs caused by thieves. Anti-slip surface offer a safe road condition even in extreme weather.
Light weight
Compared with cast iron manhole cover, FRP manhole cover is 30% lighter.
Light weight allows more loading per vehicle, more convenient transportation and economical savings.
Allows a safer working condition, which single workers is enough for installation without risk of injury.
Customer design
FRP manhole covers allow customers’ innovative design, logo, or etc. we have our own design team who can also offer design work for customers.
3.Manhole Cover Images:

Μanhole Cover for Round Cover Made in China

Μanhole Cover for Round Cover Made in China

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) Material 
A) Ductile iron GGG50
B) Grey iron GG20 
3) Packing:
Wooden case or wood pallet, or as per customers' requirement
4)  Payment terms: T/T or L/C
5)Inspection
A)Inspection by our factory
B)The third party inspection,SGS
BS EN124 A15 A50 B125 C250 D400
Watertight Waterproof
Lockable Bolts
Anti UV Antistatic Finish
Manhole Cover  BS EN124 A15 A50 B125 C250 D400
Watertight Waterproof
Lockable Bolts
Anti UV Antistatic Finish

5.FAQ:
We have organized several common questions for our clients,may 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. 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.

Q. Odours are coming through where I have installed my manhole cover, why?
A. Your cover must be sealed and locked, or neoprene sealed, so you would require a T-Range Cover, or if you require a solid top, a selection of the PC range (e.g. PC2BG3, PC6CG3, not PC2BG) are suitable.

Q: Do not use self tapping screws
Flat head screws, etc. also does not require the use of gasket. In many applications, the force of the screw is not large, often do not disassemble, there is no need for gaskets. And the existence of the gasket, affect the appearance, does not apply to the use of countersunk head screws.
Q: I would like to ask what is the standard gasket and gasket in general what material?
Less dosage, the metal with Q235, rubber with XB200, are very common. If the amount is large, according to the situation to choose the most economical
Q: What is the difference between gaskets and seals?
Sealing ring is dedicated to seal, sealing effect is better.Gaskets are also included in the back pad, flat pad, spring pad, not necessarily a seal.
Q: When do flat washers use GB95 when using GB97.1?
Flat washers are usually thin pieces of various shapes, used to reduce friction, prevent leakage, isolation, to prevent loose or disperse pressure. Such components are used in many materials and structures to perform similar functions. Due to the limitation of the material and the process of the threaded fastener, the supporting surface of the bolt and the like is not large, so that the surface of the connecting piece is protected by reducing the compressive stress of the bearing surface.
Q: Gasket 300HV relative to what material?
For the 200HV and 300HV level should choose 45, 50, 60, 70 steel or 65Mn steel, heat treatment can be quenched and tempered to reach the technical requirements of 200 ~ 300HV and 300 ~ 400HV
Q: A general set of screws have a few nuts, bolts, washers?
You want to see the specific requirements and uses. There is also a nut, a bolt, and a flat pad
Q: For example, some people ask us to assemble the time zone of the flat washers of the positive and negative side, I would like to ask the installation of flat washers have positive and negative points? If yes, how to distinguish?
From the use, do not distinguish between positive and negative. From the beautiful, bright flat surface, outward
Q: 304 and 201 stainless steel spring washers that soft? Easier to move
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: Stud that head or nut that ah, I need to have the authority of the provisions of the document, please know that the prawns are told, thanks to!
The main purpose of the elastic cushion is to prevent loosening, which is added at the end of the screw, and the screw nut is arranged on the side of the nut.
Q: how much Specification for washers
Conventional M3-M130, there is a "SP" large outer diameter M8-M36, in general, large diameter washers used for long hole or flange nut assembly

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