Manhole Cover for Water System from China

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

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Item specifice:

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

Product Description:

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.
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.Designs: based on EN124 standard and according to customer's drawing or samples.
2.Main Features of the Ductile Iron Manhole Cover:
•High endurance
•High Strength
•Pressure Resistence
•Anti-corrosion
•Anti-theft
•Good visual effect
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.

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.
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.
3.Manhole Cover Images:

Manhole Cover for Water System from China

Manhole Cover for Water System from 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) 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
7) Packing:
Wooden case or wood pallet, or as per customers' requirement
8)  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.

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.

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:A general set of screws have a few nuts, bolts, washers?
A screw nut a flat washer but a spring washer
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
Q:In the design, the bolt connection is necessary to have a gasket?
The bolt must not install gasket, join many planes and automobiles and ships, wind turbines, atomic energy equipment is not installed gasket, everywhere is whether heavy vehicles or small bolts on the wheel without gasket. Gasket is the name of the washer, flat washers, special washers, spring washers, washers, washers. Installed not installed gasket, what gasket, depending on the specific design requirements, to have the basis of choice. In general, the position of the bolt hole is very high, the bolt hole diameter is relatively small, with close to that level of reaming hole, install flat washer is unnecessary, it does not have the nut friction. For those with very rough hole bolt connection, such as with M12 bolt hole diameter of 16mm, 18mm, it should be installed flat washer. This connection is often a lap of the steel frame, the location of poor manual drilling equipment. The automobile gear box is usually a hole on the production line and the position of the hole is high, and the bolt hole with the gap is relatively small, do not install the washer, otherwise the smaller contact area of the nut, the bolt is easy to loose.
Q:How to remove mildew on the rubber washer
Solution:1, activated carbon with gauze wrapped and then put;2, orange or orange peel or lemon cut into small pieces, put into steam for a while;3, is not in line with the onion steamed but the effect is poor.
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: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:When is the gasket (flat pad, spring pad)
A washer to prevent loosening of bolts. That is, elastic washer, anti loose washer works very simple. It consists of two washers. The outside is embossed with a radial surface, while the inner oblique tooth surface. When assembled, the medial oblique tooth surface relative to the outer radial surface and both ends of the contact surface relief into the occlusal state when the connectors are vibration, and the trend of bolts loosening, only allow two washers inside oblique tooth relative dislocation, resulting in uplift of tension, so as to achieve the 100% locking.
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: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!

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range