Manhole Covers and Frames Ductile Cast Iron D400 Lockable

Ref Price:
Loading Port:
China main port
Payment Terms:
Min Order Qty:
200 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 Covers and Frames Ductile Cast Iron D400 Lockable

Manhole Covers and Frames Ductile Cast Iron D400 Lockable

4,Manhole Cover Specifications:

Manhole Covers and Frames Ductile Cast Iron D400 Lockable

Manhole Covers and Frames Ductile Cast Iron D400 Lockable


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:Poll: Metal Music vs. Rap Music?
Death Metal is perhaps the most aggressive subgenre of Metal. The difference is instantly recognizable. Growled vocals, blast-beats, and all that jazz.
Q:What is the actual classification of metal?
No. They're not black metal. They're alright. I like their aesthetic, especially. But there's several things that make a band black metal (beyond saying it), and Venom never were any of those things. The first is in the beats, and Venom played really down tempo, old school heavy metal beats. Even their fast songs would be considered slow for black metal. Secondly, their chord progressions are old school. They even use 12-bar blues progressions on certain songs… like Chuck Berry, or Elvis. Black metal doesn't do that. Thirdly, the vocals aren't black metal at all. And that may be the most important thing. There are black metal fans out there who call acoustic folk music black metal… just because it has black metal vocals. Black metal vocals are screamed, really-highed pitched harsh. Goblincore… Venom doesn't sound anything like that. Listen to Gorgoroth. Early Gorgoroth… with Pest as their singer. It's like nails on a chalkboard… which black metal fans, including myself, like. Granted, not all black metal vocals are that high-pitched, but they're always harsh. And if they're too low, they'll get labeled death metal shunned
Q:what sub genre of metal would slipknot be labeled as?
I feel so bad skipping over these links, lol. I just can't get into most harsh vocals, I'm sorry! :'O It distracts me from the music. Some of the only ones I like are from Draconian, Otep, and Cadaveria......but those are all well known (well, in metal terms at least). Thanks for trying to bring unknown bands to RP though, haha. If you can find me a symphonic band with a clean vocalist, I'd be more than happy to answer! xD
Q:Do you listen to Death Metal?
Without metal, we'd still be cavemen and there would be a lot of broken wooden clubs and bats. Metals played a significant role in humankind's technology and it really took off after the Stone Age. In our community, metal makes our infrastructure such as: pipes, drills, computers, telephone poles, vehicles, signs, satellites, furniture, etc. Metals are also used to create other items. Concrete comes from metallic mixers, toothpicks from chainsaws, and even power from batteries.
Q:Can you name all the Sub-Genre's to metal?
Black Sabbath Ozzy Osbourne Pantera Slayer Metallica Megadeth
Q:what are poor metals?
Rock is rock, fast, slow all the same! Rock music is an attitude to life and how we live it. It's about every feeling in life, a song for every situation or emotion, people have to give things a label like speed metal, death, black, prog, emo, all come from the same thing THE BLUES! EVERY rock track can be tracked back to the blues so lets give up all the labels and your not cool if you like soft rock, just enjoy the music and don't worry about its label or if it's cool. IF you like it then it's cool! JUST LOVE THE MUSIC AND DON'T WORRY ABOUT MUSIC SNOBS! BLESSINGS BE
Q:Best Metal band of the 00s?
Divalent metals (Gp 2) typically form ionic compounds, although now that I say that, the exception of the Grignard reagent (R-MgCl), where R is an aliphatic organic group) comes to mind. However, there are many transition metals which do both: iron, for example, which forms FeCl2 (an ionic compound) or Fe(C5H5)2, covalent but derived from Fe(ii).
Q:Which metal is crying?
eric clapton invented metal
Q:Scottish Metal Bands?
Mercury is a metal by definition. Its conductivity (and as such, its lustre) make it fall into the category of metal. Just because mercury is liquid does not make it any less of a metal. All metals turn into a liquid at a sufficiently high temperature; Mercury's melting point is just low in comparison.
Q:is bronze a high quality metal?
Heavy metal Thrash metal Death metal Black metal Power metal Progressive metal Doom metal Gothic metal Industrial metal Nu metal Speed metal Groove metal Glam metal Stoner metal Sludge metal Drone metal Alternative metal And all of this genres have subgenres like death metal(technical death, melodic death, grindcore, deathcore etc) thrash metal(crossover thrash metal, thrashcore) Black metal(norwegian black metal, fwobm,viking metal) Alternative metal(rap metal, nu metal, funk metal)etc

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