Manhole Covers Ductile Iron and Grating GGG50 B125

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Loading Port:
China main port
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TT OR LC
Min Order Qty:
500 pc
Supply Capability:
200000 pc/month

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Item specifice:

Material: Ductile Iron Cross Sectional Shape: Round,Square Thickness: 50-100mm

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.

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.

2.Main Features of the Ductile Iron Manhole Cover:                      

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 GGG500&400-12

B) Grey iron GG20

3) Designs

a) EN124 Class B125 C250 D400 ,with different size and grammage, or as per customers requirement

b) Major standards designs available

c) as per customers' drawing or samples

4) Process

a) Molding boards

d) Green sand with molding                        

3.Manhole Cover Images:

Manhole Covers Ductile Iron and Grating GGG50 B125

Manhole Covers Ductile Iron and Grating GGG50 B125

4.Manhole Cover Specifications:

A)Inspection by our factory

B)The third party inspection,SGS

SMC Watertight Manhole Cover 

BS EN124 A15 A50 B125 C250 D400 

Watertight Waterproof 

Lockable Bolts 

Anti UV Antistatic Finish

SMC Watertight Manhole Cover  BS EN124 A15 A50 B125 C250 D400

Watertight Waterproof

Lockable Bolts

Anti UV Antistatic Finish

5.FAQ:

We have organized several common questions for our clients,may 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.

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Q:How to distinguish the advantages and disadvantages of bathroom hardware?
Raw materials: zinc alloy Liepin generally use inferior recycled materials as raw materials, and cut corners to reduce costs, loose structure, light weight, feel giddy. Superior products: general use fine cast pure copper, high-quality zinc alloy or titanium alloy as raw material, tight structure, heavy weight, feel thick. Raw material, YISHION and copper are preferred. The casting and finishing process: the shortage of small Liepin die casting machine and simple machine, pressure, product gross PI surface pores, cracks and surface defects of wire lines, inequality, polishing process rough, simple process. Superior products: the use of large precision computer control die-casting machine tools and digital precision machine tools, rough surface smooth, smooth, no pores, silk defects and other phenomena, grinding and throwing, when the process is rigorous, a wide range of processes. The plating: plating Liepin is thin and uneven, loose structure, poor adhesion, luster, the chrome plated directly in the blank, after a period of time, the surface is easily corroded, wear, blistering and peeling off. The coating thickness is less than 20 microns, the material is easy to be oxidized by air, and the coating surface has many scratches and burrs. Products: in strict accordance with the national standard electroplating technology, using imported raw copper, nickel, chromium and copper after, three plating process, depending on the sense of thick, shiny, long-term use will not wear, corrosion, foaming or peeling,. Compact structure, uniform coating, "" crisp, color surface coating thickness in general more than 30 microns, no scratch coating surface and burr. The accessories Liepin: fasteners made of steel screws, easy to rust, glass products made of low-grade products, uneven thickness, low transparency, visual sense of opacity. Excellent...
Q:What does hardware mean? Big brother, give me a detailed explanation
Hardware: closed door, glass door clamp, pulley, crescent lock, window lock, handleDoor and window support, hinge, window support hinge, window support slide rail, door lock, door hingeAll hardware fittings on doors and windows.Such as hinges, door locks, latches, curtains, rails, curtain bars, window buttons, and some doors, if the sliding doors, but also with the slide.
Q:What does the home improvement hardware include? What are your buying skills?
A lot of home improvement hardware, including door pull pages, locks, slide rails, hinge handle, sliding door, rail suspension wheel, etc., these are considered home improvement hardware. Hardware purchase skills are as follows: (1) should be selected and sealed hinge, slide, lock of good performance. When buying and selling, opening and closing, pulling several times, feel its flexibility and convenience. (2) it is advisable to select locks with good flexibility. When you buy, you can plug the key several times to see if the thread is not smooth. The switch is screwed up, whether it saves power or not. (3) choose all kinds of decorative hardware with good appearance. When buying, mainly to see whether the appearance of defects, electroplating gloss, feel smooth and so on. (4) by hand a weigh weight, like products, the heavy weight of products relatively good materials.
Q:Which part is responsible for leakage of hardware?
If the warranty period has passed, the water should be public property maintenance, the loss is the property bear, you can see their property contract, if the property is not in this part of the cost of public use of water pipes, responsibility and use you, if you are using the water, after the warranty period, the responsibility of all is he.
Q:What does hardware include?
Hardware for construction hardware, metal, locks, nails, iron wire, steel wire mesh, wire scissors, home hardware, tools and so on.
Q:What does "hardware delivery" mean?
Hardware:Hardware: five metals. "Wu Yue four" - "spring and Autumn" Lu: "Chen Wen Yue Yuan often make ou Yezi sword making five pieces, a reed, hardware Ying, sun jing." According to the "Han Shihuo Zhi" "gold, knives, turtles, shellfish" note: "that the gold colored gold, yellow, gold, silver, white, red, green, copper, lead, iron, black." Later known as gold, silver, copper, iron, tin for hardware.Include:"Hardware" refers to the gold, silver, copper, iron, tin five metal materials, said, "hardware is the mother of the industry"; the basis of national defense, hardware products, usually only divided into large hardware and hardware two categories. Big hardware includes steel plate, steel, flat iron, steel bar, universal channel iron, I-iron and various types of hardware, building hardware, tin, lock nails, wire, steel wire, steel wire cutting, home hardware, tools etc.. On the nature and use of hardware, iron and steel materials, non ferrous metal materials, machinery parts, transmission equipment, auxiliary tools, working tools, construction hardware, household hardware and other eight categories are to be considered.
Q:What is the rebate rate for hardware?
According to the 5% tax rebate rate, the income is 170W, according to the vat of 17%, the tax refund amount is =170/1.17*0.05=7.27W
Q:What are the detailed classifications of hardware tools?
The general is moving hand, screwdriver, hammer, chisel, inner six angle, sleeve head, Jack, hoist, electric knife, pencil, fork, sawing, file, rivet, etc.
Q:I opened a small hardware factory, and I also have a few punch, want to do hardware accessories, and do not know what kind of good to do, good money, beg!
What do you want to punch?. What does your machine do?. Punch can punch too many things.
Q:What do the hardware stores sell?
Such as furniture hardware accessories can be divided into functional hardware and decorative hardware two types. Functional hardware refers to the hardware parts that can achieve certain functions of furniture, such as connectors, hinges and slipway. We also need to pay attention to the doors and hardware accessories. Such as lotus and other hardware, the gold and silver and brass and iron, tin five metal materials, hardware is the mother of industry; the national defense foundation, hardware product material, usually divided into two categories of hardware and hardware. Big hardware includes steel plate, steel, flat iron, steel bar, universal channel iron, I-iron and various types of hardware, building hardware, tin, lock nails, wire, steel wire, steel wire cutting, home hardware, tools etc.. On the nature and use of hardware, iron and steel materials, non ferrous metal materials, machinery parts, transmission equipment, auxiliary tools, working tools, construction hardware, household hardware and other eight categories are to be considered

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