Manhole Cover with Square from China High Quality

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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: AC Power,DC Power,Gasoline,Diesel
Customized: Customized,Non-Customized Surface Treatment: Nickel Plated,Copper Plated,Chrome Plated,Polishing,Zinc Plated

Product Description:

1.Ductile Iron Manhole Cover Description :
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.
2.Main Features of the Ductile Iron Manhole Cover:
•High endurance
•High Strength
•Pressure Resistence
•Anti-corrosion
•Anti-theft
•Good visual effect
Applications:
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:

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Manhole Cover with Square from China High Quality

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) Designs
A) EN124 Class B125 C250 D400 F 900, with different size and grammage, or as  customers' requirement.
B) as per customers' drawing or samples

4) Process
A) Molding boards
B) Hand Casting
5) Coating
A) black bitumen or epoxy .
B)Coating as per customer's requirement
6) Different accessories are available
5.FAQ:

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. I need access through my manhole cover on a regular basis, is this possible?
A. Yes, the majority of covers have built-in lifting keys, and for those that don’t we also supply lifting keys. However, the best way to obtain easy access is to have a bespoke, hinged manhole cover.

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Q:Why do you have to add a spring washer when it comes to the role of ah ah ah
If the screw on a spring washer, screw and screw hole fixed, due to the role of the spring washer spring will greatly reduce the possibility of loosening screws, falling off
Q:How to determine the number of washers
The axial shim changes need to take into account:Disc cleaning frame;After the extreme speed, the angle of the disc flywheel will not fall off the chain: a) in the largest piece of the disc in the disc, the largest piece of flywheel b) chain in the smallest piece of the disc, the flywheel in the smallest piece.
Q:Gasket A140 what is the material
Gasket A140 is stainless steel, used in corrosive media environment to do flat washers.Gasket introduction:A part between a connector and a nut. A flat metal ring is generally used to protect the surface of the connecting piece from the nut.Classification:The washer is divided into: -C, flat washer washer -A and grade C, grade -C large washers, washer, flat washer, flat washer, chamfered - - a grade steel structure with high strength washer, spherical washer, taper washers, square taper washers, steel I-beam, square taper washers standard type spring washers, spring washers, light heavy spring washers, lock washers internal teeth serrated lock washers, inner and outer teeth lock washers, serrated lock washers, single ear washers, ears washers, external tab washers, round nuts with washers.
Q:Are there any positive and negative points on the flat washer?
Generally, but if the request is high, there is a round face near the nut.
Q:Nominal diameter 12 washers, outside diameter?
at present our country flat washer implement related standards are as follows:
Q:When do flat washers use GB95 when using GB97.1?
National standard GB95 applies to the performance level to 6.8, product grade C grade of the six head bolts and screws; as well as the performance level to level 6, the product grade is C grade of the nut, the surface of the hardened screwGB97.1 is suitable for six head bolts and screws with grade 8.8/10.9, grade A/B, grade 8/10, grade six, with a grade of A/B, and a self - tightening screw for surface hardening
Q:Why do some nuts and washers, and some nuts without washers
If the diameter of the screw and the diameter of the fixed parts of the hole size difference is relatively large, if not washers, nuts and parts of the contact area is relatively small, it is necessary to increase the contact area of the gasket. In addition, the pressing oblong hole, also need to add washer. The same reason is to increase the contact area, making the connection more reliable.
Q:Flat gasket with what material
Due to the standard for the 100HV, 140HV flat washers can be made of low carbon steel. General enterprises in the selection of materials, most of the materials used in Baosteel, easy to cold stamping. Here is a brief description of Baosteel standards.
Q:Would like to know the role of flat washer?
Flat washer1 generally used for multiple parts, to increase the bearing surface, covering the larger hole, to prevent damage to the surface of the parts, large washers for wood parts.
Q:Which is better than the spring washer and the inner tooth?
The inner tooth type flat anti-skid pad is used in the mechanical combination to fasten the vibration resistant sealing components!

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