Manhole Covers Ductile Iron Heavy Duty Round GGG50 DI

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100 pc
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20000 pc/month

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Item specifice:

Material: Ductile Iron Cross Sectional Shape: Round Thickness: 50-60mm

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. 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.
4. Safety options
There is no metal contain, directly reducing potential accident or further maintenance costs caused by thieves. Anti-slip surface offer a safe road condition even in extreme weather.
5. 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.
3.Manhole Cover Images:

Manhole Covers Ductile Iron Heavy Duty Round GGG50 DI

Manhole Covers Ductile Iron Heavy Duty Round GGG50 DI

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
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’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:Are there any better hardware parts for the glass sliding door?
The wheels are hard to push with bad quality is greatly linked, it is recommended that you use titanium alloy monolithic glass sliding door,
Q:What hardware fittings are needed for the glass curtain wall project?
After the installation of pre fill panel (if the embedded parts will be ignored), the use of chemical anchor bolt and expansion bolt, chemical anchor bolt of a set of agents, screw, flat pad, nut. The expansion bolt has a flat pad, an elastic pad and a nut.
Q:What does hardware include?
First of all, "hardware" concept, mainly refers to gold, silver, copper, iron, tin five metal materials collectively.Hardware is the mother of industry; the foundation of national defense and the products of hardware materials are usually divided into two major categories: big hardware and hardware.
Q:Do you need your own hardware to buy a suit door?
If you have a better hardware match, should also be in advance with the merchant clear.
Q:What is a hardware cooker?
It's a metal ware (a mix of metal and other materials, such as wood and plastic) that belongs to hardware cookware.
Q:How many kinds of hardware are there in this industry?
Hardware can actually be divided into tools and hardware two categories;The tools below can be subdivided:Manual tool (brush, scissors, pliers, screwdriver, wrench, hammer, file, tap die, pump, etc.) (saw blade, a chainsaw, etc.)Pneumatic tools (pneumatic wrench, pneumatic scissors, drilling, etc.)Electric tools (electric polishing machine, electric drill, electric hammer, electric wrench, electric scissors, air guns and etc.)Auto repair toolsConstruction equipment and toolsGaugeGardening tools and equipmentDiamond toolsAbrasives, abrasive (grinding wheel, grinding head, grinding block, sand paper, Whetstone, polishing wheel, grinding agent, polishing paste, etc.);Hardware subdivided into:Hardware fittings (hook, steel ball, pulley, nozzle, universal wheel, rigging, etc.)Construction hardware (locks, fittings, doors and windows, hardware, etc.)Mechanical hardware (bearings, dies, springs, valves, cutting tools and clamps, pneumatic components, etc.)Daily hardware (knife, scissors, etc.)
Q:What kinds of hardware fittings can be divided into?
door lock (5) glass window lock electronic lock (6) (7) (8) chain lock anti-theft lock (9) lock the bathroom (10) (11) number lock padlock (12) the lock (13) lock core.
Q:What does bathroom hardware have?
Bathroom hardware accessories, generally refers to the installation in the bathroom, the bathroom wall, for placing or hanging clothes cleaning supplies, towel products, general hardware products, including: single hook, towel bar, double towel bar, cup holder, double cup holder, soap dish, soap, towel, towel ring net frame, dresser clip, toilet brush, towel rack, double shelf, and metal faucet, shower and a series of products, you can see only recommend this brand of bathroom products, the only bathroom is mainly ceramic sanitary ware, bathroom furniture, bathroom accessories and other leading hardware, sanitary products, sanitary ware based on integration the three major functional areas, to meet the individual needs of consumers, and provide real-time design of DIY whole bathroom solutions. Unique bathroom calendar three years of careful planning, spending huge sums of money through the power of e-commerce and the experience of cities throughout the country, for the pursuit of affordable and high quality bathroom consumer demand services.
Q:How to distinguish the advantages and disadvantages of bathroom hardware?
Bathroom hardware coatingProducts: 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, color face crisp, generally more than 30 micron in thickness, no scratch coating surface and burr.Liepin: plating layer 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.
Q:What are the laws and regulations of hardware?
Hardware laws and regulations: first, the national quality standards. This is the regulation. The hardware shall conform to the requirements of the regulations in accordance with the regulations. Safety standards, this must be strictly enforced legal norms. Is the hardware must ensure the safe and reliable use, safety accidents caused by quality factors cannot, if the quality safety accidents caused, the producer must undertake the corresponding administrative or criminal liability. The laws in this respect are mainly safety production law, quality law, consumer law, and so on. More general, but more formal. The hardware of national quality supervision and testing: China commissioned by the national certification and Accreditation Administration of the national metrology accreditation review group on building materials, through the certification supervision and expansion of the assessment of national building material industry hardware plumbing product quality supervision and testing center. Even Japan, building materials experts review group consults relevant information center, to the scene detection and testing equipment, test items on the part of a field test was carried out, the center of the authorized signatory on-site examination strictly, and the related staff of the theory exam, organize relevant personnel to the discussion. They believe that the test center has established a complete quality management system, organization system operates effectively, have the capability to undertake impartial third party inspection; the quality of personnel, equipment, environmental conditions and test reports have reached the requirements of standards of review.

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