• Ductile Iron Manhole Cover for D400 C250 Mining's Systerm System 1
  • Ductile Iron Manhole Cover for D400 C250 Mining's Systerm System 2
  • Ductile Iron Manhole Cover for D400 C250 Mining's Systerm System 3
  • Ductile Iron Manhole Cover for D400 C250 Mining's Systerm System 4
  • Ductile Iron Manhole Cover for D400 C250 Mining's Systerm System 5
  • Ductile Iron Manhole Cover for D400 C250 Mining's Systerm System 6
Ductile Iron Manhole Cover for D400 C250 Mining's Systerm

Ductile Iron Manhole Cover for D400 C250 Mining's Systerm

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Loading Port:
Dalian
Payment Terms:
TT OR LC
Min Order Qty:
110 set
Supply Capability:
4000 set/month

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Specification

Specification:
OEM
Brand Name:
CMAX
Usage:
Construction, industry
Product Name:
OEM Products
Place of Origin:
Hebei, China (Mainland)
Type:
Moulding Press
Size:
Customer's Request
Shape:
Square,round
Service:
OEM Service
Surface treatment:
Painting
Certification:
ISO9001 2008
Connection:
Extrusion molding
Standard:
EN124 Standard
Color:
black, Grey, green, blue and Marble
Process:
Casting. Deburring .Drilling .threading
Material:
Iron

Product Description

Material: Cast(Grey) Iron (GG 20, GG 25) and Ductile(SG) Iron(GGG 50).

Sizes: 300 mm X 300 mm (11.81" X 11.81") clear opening to 1200 mm X 1200 mm (47.2" X 47.2") clear opening.

Load Rating: A15, B125, C250, D400, E600 and F900

Painting: Black Bitumen, Epoxy and other paint as per  provided by customers.

Other Features: Hinging, Locking provision available, Leak proof and customized designed available.


Specifications

Double triangle ductile iron manhole cover
1.Standard:ISO 9001 EN124 D400
2.Service:OEM
3.High quality
4.Made of ductile


Features

1.High Intensity

It adopts macromolecule complex material and reinforcing steel bar moulded by high temperature and press at one time.

2.Durable

Acid-alkali and corrosion resistance; anti-rust; insulation; weatherability; excellent anti-pressure capability.

3.Unique  appearance

Rich colors;the cover is not sprayed in surface but painted in whole material so that the color can keep lasted.

4.Competitive price

The price of compound manhole cover is lower than stipulated standard cast iron ones.

5.Save mine resource

It is made by regenerated resin or regenerated plastic raw material, which save application of cast iron


Pictures


Ductile Iron Manhole Cover for D400 C250 Mining's Systerm


Ductile Iron Manhole Cover for D400 C250 Mining's Systerm


FAQ

Why imported Composite Manhole cover/Grating fromChina?

1. Very competitive price, it will save you third or even half cost;

2.Good quality, don't worry much about the quality, actually, most of the building materials you buy from Miami, Dubai ,Italy, South Africa or your local market are imported from China. So why not buy direct from China. The key point is to find a reliable supplier who is honest and professional to take care of the quality and delivery time.

3.Chinahas full range of Manhole covers which Follow En124  for your market, like A15,B125,C250,D400.

Q:My parts complex, machining costs are relatively high, so want to cast, but the surface needs anodizing, what material will be better?
Yes, the cast aluminium is polarized and gray, but the key problem is to guarantee the quality of the aluminium casting, and the quality of the other aluminium casting is not good.
Q:What are the causes of pitting on the surface of a precision casting?
The quality of the shell surface is out of order. Or shot blasting out of question.
Q:Casting parts have poor surface finish. What sand is used to make them?
Manual coal dust, clay sand is a little worse. Mechanical styling is not bad either.
Q:What is the reason for 304 stainless steel precision casting parts to be changed?
304 stainless steel is easier to change than ordinary steel. Because the 304 heat conductivity is lower than that of the low doped steel, the temperature is even more uneven, and 20% of the non ferrous elements also make the distribution of internal and external elements more uneven, hard and soft inside. Each of these two produces greater internal stresses, resulting in a variant.
Q:What reason is the bronze statue choking fire?
The casting process in boiling phenomenon, is the setting of the exhaust hole positioner position or number is not reasonable, the air cavity can not be discharged, overwhelmed by a material inlet, reflux, change mould, sincerely help you look forward to adopt,
Q:Domestic large steel castings factory which is better, recommend!
Do the casting manufacturer of large steel castings, Hunan Jinsha heavy industry science and technology limited company, heard that their professional only more than 1 tons of steel castings, anyway, 150T just big, the company won a lot of foundry industry patents should be good.
Q:Which master knows how the casting tolerances for malleable iron, gray iron and ductile iron should be chosen? Hurry up, thank youCan you provide a tolerance scale for castings, please?
Our country has a national standard for casting tolerance levels. This national standard applies to you in malleable iron, grey cast iron, and ductile iron.
Q:our factory now produces steel castings in the use of polishing directly after spraying processing, but the powder sprayed 15But the spray powder touched off what is the reason we are not very strict requirements not only need to peel off bubbles can also, because our products are steel castings so we use steam hole sludge put on. Do not know if this spray treatment has no effect to thank friends with us!
Cast iron has not been done, if it is iron, then in the spray before going through strict pretreatment, the surface can not have a little oil dust
Q:How do casting parts remove stress?
Annealing treatment, according to different casting annealing treatment, eliminate thermal stress, if need to restore hardness or increase hardness, and then quenching treatment
Q:Why do casting parts have air holes?
There are many reasons for casting porosity, mainly due to:1. smelting process is unreasonable, metal liquid absorbs more gas;2. the gas in the mold invades the metal liquid;3. from the mold is more water brush, core dry;4. the casting has poor ventilation;5. ladle tools are not dry.Wait。

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