Manhole Cover En124 D400, Locking Manhole Cover from China

Ref Price:
Loading Port:
Payment Terms:
Min Order Qty:
100 pc
Supply Capability:
10000 pc/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

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.

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.

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



·Good visual effect


3,Manhole Cover Images:


Manhole Cover En124 D400, Locking Manhole Cover from China

Manhole Cover En124 D400, Locking Manhole Cover 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 


A)Inspection by our factory

B)The third party inspection,SGS





We have organized several common questions for our clientsmay 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. 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.


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:CHEMISTRY: Metals & non metals in the periodic table?
All are good in their own ways, but if you want my honest opinion... Classic metal is an 8 of 10 Thrash Metal is a 9 of 10 Glam Metal is a 6 of 10 Death Metal is a 9 of 10 Industrial Metal is a 7 of 10 Gothic Metal is a 7 of 10 Nu Metal is a 7 of 10 All metal is good metal, unless it's not, then it sucks... NEED MOAR OPETH!!!
Q:R&P: Battle of the Metal Bands (Introductions + choosing your bands)?
Metals only conduct electricity coz of their FREE electrons.but the electrons in a non metal r not free.
Q:Metal Gear Solid - Should I play the first two Metal Gear games first?
The primary reason for coating one metal with another is corrosion resistance. You might also do it for decoration, or to provide a wear or bearing surface, or to make a good electrical contact. Many things (tools, automotive parts, etc) are plated with copper and then nickel and then often chromium, to give them both corrosion resistance and a nice shiny chrome finish. The chromium gives an attractive bluish tint to the part, but it's the nickel that is the heavy layer giving you the mirror-like surface and most of the protection. Outdoor steel is often coated with zinc, called galvanization, either by electroplating or by dipping the steel into molten zinc. The zinc corrodes sacrificially to the steel it is protecting. Many things are gold plated for decorative purposes, to prevent oxidation, to improve electrical conductivity, or all of the above. You often see gold plated electrical connectors on high-end audio gear.
Q:Most Influential Metal Band...?
1. Soulfly 2. Sepultura 3. Sabaton 5. Immolation 6. Immortal 7. Ensiferum 8. Dimmu borgir 9. Gojira 10. Lacuna coil 11. Pantera 12. Black 13. '90's( mainly because of black metal) 14. The sound of perseverance 15. Judas Iscariot's the cold earth slept below 16. Dimmu Borgir's Mourning Palace 17. Bret Hoffman and Cristina Scabbia 18. Alex Webster 19. Rob Barrett 20. Igor Cavalera 21. I like behemoth and mastodon's live albums 22. Metallica 23. Hmm.... Suffocation and origin a few years ago 24. I wanna go see Wormed soon... 25. The Deftones are a great band BQ; it's about metal, I enjoyed it.
Q:Paper chromatography with metals?
I guess, those songs with guitar distortions are metal. :D
Q:How to predict metal reactivity?
metals tend to have just one or two free electrons loosely bound. the S, P, and D orbitals aren't tight, and as such, the metals are most likely to lose the electron. the non-metal can emit as well, but given that it takes far less energy to remove a metal electron, the metal electron is likely to be the source. it's kind of like putting a piece of paper up against a piece of steel. sure, if you can punch through the steel, then you'll see your hole. but you will almost certainly punch through the paper before then.
Q:What is the difference between Metal Core and Death Metal?
Q:List your favorite (that means 1) metal bands of the following metal sub-genres...?
noble metals refer to elements having high resistant to chemical reaction or to corrosion.The term noble metals has its origins in ancient alchemy, the practice of attempting to transform base metals into gold. Noble metals is not synonymous with precious metals, (a term used to describe expensive metals used for making coins, jewelry, and ornaments) although gold, silver, and platinum are both noble and precious metalsosion meaning that they will not easily dissolve in solvents or in rust.,
Q:What is the difference between metal and death metal?
Obviously this one is the best ps3 game. I like this game. Metal Gear Solid 4: Guns of the Patriots Exclusive Limited Edition PS3 Product Features - MGS4 pushes the power of the PlayStation 3 to its limits with cutting edge graphics and surround sound. It also aims to be the hallmark title for the new DualShock 3 controller. - Command Snake in his final mission which spans the entire globe and his quest to foil the plans of Liquid Ocelot and his massive army of PMCs. - LIMITED EDITION -- Bonus video disc containing documentaries and interviews. - LIMITED EDITION -- Metal Gear Import Soundtrack CD - LIMITED EDITION -- Collectible tin case
Q:What form do metals exist naturally?
Atreyu - Doomsday Black Sabbath - Paranoid Anthrax - Caught In A Mosh,Bring The Noise Megadeth - Symphony Of Destruction Slayer - Raining Blood,Jihad Metallica - Battery,The Memory Remains,St. Anger Lamb Of God - Redneck,Ghost Walking,Laid To Rest,Ruin Slipknot - Before I Forget,Duality,Psychosocial

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
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