Cast Iron Manholes with High Durability.

• After-sales Service: Professional Technical Support
• Warranty: 12 Months
• Material: Iron
• Shape: Square
• Certification: ISO
• Surface: Clear,Beautiful,Non-Slip
• Coating: Black Bitumen Coating/on Special Requirements
• Grade: D400
• Key Hole: Closed
• Transport Package: Wooden Pallet
• Specification: clear openging 600x600
• Trademark: none
• Origin: China
• HS Code: 73251090
• Production Capacity: 10000

Product Description

Model Number	manhole cover,double triangular:AFT-DT-6060D
Brand Name	Arfanti
origin	China
Small Orders	Accepted

Key Specifications/ Special Features:

1) Product information: 
Manhole Covers are manufactured for construction and public use. Manhole Covers shall be smooth and free from sand holes, blow holes, distortion or any other defects;can be assembled GRP seal Plate.
2) Material 
a) Ductile Iron GGG500-7 & 400-12 
b) Grey Iron GG20
3) Designs
a) EN124 A15, B125, C250, D400, E600 and F900 
b) casting design 
c) Major standards designs available 
d) As per customers' drawings or samples 
4) Process 
a) Molding boards 
b) Automatic molding 

5) Coating 
a) Cold applied black bitumen 
b) Without coating 
c) Coating as per customers' requirement 
6) Different accessories are available 
 

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 113 kilograms (249 lb). The weight helps to keep them in place when traffic passes over them, and makes it difficult for unauthorized people without suitable tools to remove them.

Manhole covers may also be made from glass-reinforced plastic or other composite material (especially in Europe, or where cover theft is of concern). Because of law restricting acceptable manual handling weights, Europe has seen a move towards lighter weight composite manhole cover materials, which also have the benefits of greater slip resistance and electrical insulating properties.

Other manhole shapes can be found, usually squares or rectangles. For example, in the United Kingdom nearly all manhole covers are square or rectangular and very occasionally triangular, but almost never circular. Nashua, New Hampshire, is unusual for having triangular manhole covers that point in the direction of the underlying flow. In 2011, the city began gradually phasing out the triangles, which were made by a local foundry, because they were not large enough to meet modern safety standards and a manufacturer for larger triangles could not be found. Some manhole covers in Hamilton, Bermuda, are triangular, and hinged. Some triangular water-main covers also exist in San Francisco

Product Performances
1. Strong load-bearing capacity
The square cast iron manhole cover has a very strong load-bearing capacity and can withstand the pressure of heavy objects such as vehicles and pedestrians. This is very important because the city is densely populated with people and vehicles, and the manhole cover is easily under pressure. The square cast iron manhole cover is made of solid materials and has a strong guarantee in load-bearing capacity.

2. Strong durability
The square cast iron manhole cover is made through multiple processes and has high durability. It can withstand the erosion of various natural environments such as natural wind, sun, rain, etc. Therefore, the square cast iron manhole cover has a good performance in terms of service life and is relatively economical and practical.

3. High safety
During the production process, the square cast iron manhole cover uses solid materials and precise processing technology, so it can ensure safety in different environments. At the same time, the surface of the square cast iron manhole cover adopts an anti-slip design, which makes it have good anti-slip performance in a humid environment and prevents pedestrians from slipping on rainy days.

4. Beautiful and generous
The square cast iron manhole cover is simple and generous in appearance and has a high degree of beauty. The appearance design of square cast iron manhole covers widely used in cities is quite beautiful. The black cast iron panel is just the right foil to make the whole road look neater. At the same time, the appearance of square cast iron manhole covers is easier to integrate with the urban environment, playing an important role in urban construction.


Packing 
Steel or wood pallet, or as per customers' requirements'

Item	Manhole cover
Material	Ductile iron
Color	Black
Size	Customer's 3D Drawing
Logo	ARFANTI or Customized
Load capacity	A15,B125,C250,D400,E600 and F900
Painting	Black bituman/Customer's requirement
Certificate	ISO9001,BS-EN124
Tolerance	Machining:+/-0.02mm, finish machining:0.002mm

 

The covers usually feature "pick holes", into which a hook handle tool is inserted to lift them. Pick holes can be concealed for a more watertight lid, or can allow light to shine through. A manhole pick or hook is typically used to lift them, though other tools can be used as well, including electromagnets.

Product Performance
The square ductile iron manhole cover is strong and durable, with good tensile strength and pressure resistance. Compared with resin composite and cement rainwater inlets, the elongation rate is much higher, with good pressure resistance and not easy to be damaged. At the same time, ductile iron manhole covers are generally divided into round and square. In urban road administration, round manhole covers are generally used because round manhole covers are not easy to tilt and can better protect the safety of pedestrians and vehicles. In residential areas, rural areas or on both sides of urban roads, square covers are generally used to better prevent the entry of liquids such as rainwater.