Manhole Cover for Export Quality Made in China

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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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Item specifice:

Material: Ductile Iron Standard: square Power Supply: DC Power,Gasoline,Diesel,AC Power
Customized: Non-Customized,Customized Surface Treatment: Zinc Plated

Product Description:

1.Ductile Iron Manhole Cover Description :
A manhole cover sits on metal base, with a smaller inset rim which fits the cover. The base and cover are sometimes called "castings", because they are usually made by a casting process, typically sand-casting techniques.
1.Advantages: Good compressive, bending and impact strenth,anti-corrosion, not rust, long service life(at least 30 years). The quality meets the same kinds cast ion manhole covers but the cost is 30% lower than. Contain no metal and no recovery value, anti-theft.
2.Applications: water supply and drainage, fire engineering, natural gas,electricity and telecommunications, street lamp and outdoor illuminations.
3.Color: black, Grey, green, blue and Marble , etc.
4.Inspection: in-house or the third party as per customer's request.

2.Main Features of the Ductile Iron Manhole Cover:
1. 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.
2. 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.
3. Long service life
Strong resistance of acid, alkali, weathering, anti corrosion of water, dust, manhole covers used for gas are well sealed which prevent poisonous gas leaking.
Temperature tolerance is at the range of -40°C-200°C.
Manholes allow access to underground pipes, cables, meters and facilities.
BS EN124 Standard:
A15: Area which can only be used by pedestrians and pedal cyclists.
B125: Footways, pedestrian areas and comparable parks or car parking decks.
C250: For gully tops installed in the area of curbside channels of roads.
D400: Carriage ways of roads(including pedestrian streets), hard shoulder and parking areas, for all types of road vehicles.
E600: Areas of imposing high wheel loads, e.g. dock and aircraft pavements
3.Manhole Cover Images:

Manhole Cover for Export Quality Made in China

Manhole Cover for Export Quality 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) Process
A) Molding boards
B) Hand Casting
4) Coating
A) black bitumen or epoxy .
B)Coating as per customer's requirement
5) Different accessories are available
6) Packing:
Wooden case or wood pallet, or as per customers' requirement
7)  Payment terms: T/T or L/C
5.FAQ:
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. I’ve measured my clear opening size but none of your covers match it, can you offer anything?
A. It’s likely that your cover is quite old and in imperial measurements which are no longer manufactured. However, we can offer bespoke solutions with manhole covers made to the specification you require.

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.

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Q:Why do you have to add a spring washer when it comes to the role of ah ah ah
The main function of the spring washer in the mechanical design, production to prevent the nut (or bolt) automatically loose, and even force.
Q:how to use Motor washer
Halo, brother, your question also detailed ah, there are a lot of places on a motor washer ah, do you mean where ah, you have to iron or plastic washers, spring washers, I think it is the plastic washer, mainly plastic washer 1 are leak proof, waterproof, anti oil,... 2 insulation, high pressure resistance, 3, vibration reduction, 4, reduce wear, basically on these several functions
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: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:What material is used for spring washer
Usually with 65MN spring steel or 70# carbon steel, 3Cr13, also available in stainless steel material SUS304 or SUS316. 65Mn or some other low carbon steel, such as Q235, Q195, etc.
Q:A general set of screws have a few nuts, bolts, washers?
A screw nut a flat washer but a spring washer
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:Gasket 300HV relative to what material?
Gasket 300HV relative to the usual selection of 45, 50, 60, 70 steel or 65Mn steel.
Q:I would like to ask the car transmission inside the thrust washer (thrust washer) is used to do ah?
Differential gear thrust washer is composed of silver alloy pressing, as well as plastics. Planetary gear thrust washer and half axle gear thrust washer shape are concave spherical and planar surface, there are many patterns like grooves or concave point in oil storage. The washer is the role of the friction reducing gear and axial differential housing, improve the transmission efficiency of the differential protection shell, thrust face not excessive wear, to prolong the service life of the differential housing, and maintain the normal meshing and transmission differential gear. The reason for the failure of the thrust washer is a serious lack of lubricating oil, or because of the small size of the stay and the erosion. Planetary gear broken, cross shaft fracture caused by the thrust washer damage, is generally rare. When the vehicle is traveling on a special road, or when the vehicle is in the mud, the differential frequency is used, resulting in excessive wear and thinning of the thrust washer. Thrust washer wear will make gear thrust surface shell, thrust surface acceleration loss, the differential gear axial shift, gear meshing clearance increases, the transmission space increases, causing the gear, cross shaft, differential housing bearing seat hole damage. Thus, the thrust washer is a reliable guarantee of differential action, but also to extend the life of differential parts. To this end, the vehicle should be updated on a regular basis when the thrust washer, to restore its proper clearance, to ensure the normal operation of the differential.
Q:201 stainless steel gasket and 304 stainless steel gasket which is soft
Looks like 304, you this is the United States brand? It is recommended that you download a mechanical manual, look at their mechanical properties

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