Manhole Cover Square Base with Round on Sale

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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: Round Power Supply: AC Power
Customized: Customized Surface Treatment: Zinc Plated

Product Description:

1.Cast Iron Manhole Cover Description :

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.

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.

2.Main Features of the Ductile Iron Manhole Cover:

•High endurance
•High Strength
•Pressure Resistence
•Anti-corrosion
•Anti-theft
•Good visual effect
1. High load capacity & resilience
Hardness is same as cast iron, while FRP manhole covers have overwhelming advantages on resilience recovery. They are designed to exceed A15/B125/C250/D400 load capacity, according to EN124: 1994.
2. Designed structure & pressure dispersion
Arc-shaped bottom structure allows the pressure they bear disperse averagely on the whole surface. Besides, the products are made not by SMC, it was put in several layers of fiber cloth to enhance the structures. So they are stronger than SMC composite manhole covers.
3. Consequences of temporarily overloading
Temporarily overloading may cause smash of concrete covers, seriously deformation, even slightly split. But this will not happen to FRP fiber cloth manhole cover.
3.Manhole Cover Images:

 Manhole Cover Square Base with Round on Sale

Manhole Cover Square Base with Round on Sale

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) 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: 

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:What are the advantages and disadvantages of car audio modification, wood washer and plastic washer?
The plastic washer is made of plastic, plastic washer at home, also known as plastic washers, washers (Washers) resin, plastic washer or nylon washer (the most common domestic market is mostly made of plastic washer nylon 66). Compared with metal gaskets, it has excellent insulation, corrosion resistance, thermal insulation and non magnetic properties, and light weight, widely used in semiconductor, automotive, aerospace industry and interior decoration and other fields. The number of materials used as many as 10 kinds, including PA66, PC, with the best performance of special engineering plastics PEEK, with glass fiber reinforced RENY and PPS, fluorine resin PTFE, PFA and PVD, etc..Wood washer to prevent resonance, but not waterproof.
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From the use, do not distinguish between positive and negative. From the beautiful, bright flat surface, outward
Q:How to remove mildew on the rubber washer
Method for removing mildew on rubber washer:Add one or two tablespoons white vinegar. Do not add detergentOrange or orange peel or lemon cut into small pieces, put into steam for a whileActivated carbon with gauze wrapped and then putBask in the shade or in the sunWash with soap or baking sodaDry with a desiccant, and then immediately get the sun outside the place to dry
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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
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The quality is not good or lubricating oil and rubber ring reaction
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Gasket 300HV relative to the usual selection of 45, 50, 60, 70 steel or 65Mn steel.
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There is no difference in the application. See the tolerance, the high requirements of the use of GB97.1. in order to save money, and the application environment is not high, use GB95
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General screw diameter and the diameter of the fastening parts of the hole is not large, the nut and parts of the contact area is relatively large, you can not add a gasket

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