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  1. Email :
  2. Tel : +86-15116381985
  3. Add : Headquater Address : No.12, Dongshi Road, Changsha Economic Development Zone, Changsha, Hunan Province, China
  4. Foundry Address : Foundry Address: NO.260,Jinchang Road,Jinjing Town,Changsha,Hunan Province,China

Round Manhole Cover&Frame

Catalog NumberA-Cover SizeB-Clear OpeningC-Frame SizeD-Frame HeightE-Duty ClassF-Lockable
carriageway ductile iron manhole cover730680980130D400no
All dimensions in mm.

Main business: hydraulic access cover, power manhole cover cover, electric manhole cover cover, intelligent monitoring manhole cover cover, intelligent communication manhole cover cover, intelligent water manhole cover cover, intelligent password lock manhole cover cover, integrated pipe gallery manhole cover cover, etc.It is a strategic partner of famous enterprises such as Huawei, China-telecom, Unicom, Zhongshan Dahua, CSCEC, CCCC, China Railway, Xi'an electric power, and the unique supplier of Hong Kong Zhuhai Macao Bridge.

Our products are exported to 32 countries and regions, Italy, Spain, UK, Malaysia, Middle east, Singapore, South Korea, Japan, Australia,Africa, etc,175 cities around the world. It is a strategic partner of famous enterprises such as Huawei, telecom, Unicom, Zhongshan Dahua, CSCEC, CCCC, China Railway, Xi'an electric power, and the only supplier of Hong Kong Zhuhai Macao Bridge.

Founded 1993, Cast-King Foundry was a industry leader in exporting carriageway ductile iron manhole cover to every continent of the earth Just purchase directly at good price from manufacturing factory as reliable supplier, save the money usually earned by a trading company.

OEM & OED is available, look forward to having you as your agent in your local market.

We would push you to great success in municipal construction and infrascture project.

Look forward to being partner with those who are engaged in whole sale business for building material, any customized high quality mechanical and industrial casting are prvovided by us as manhole cover.



manhole   cover


ductile iron   GGG50/7,Gray iron,etc


clear   opening:600mm, or as your demands


bitumen/epoxy   painting/etc /or as your request



Load   capacity



grey/black/as   your request


3-500kg/ as   your requirement  


anti-theft,   Auti-rust, less noise, long time sevice,durable, easy to assemble &   dismantle


OEM service   is available


1 Sets


wooden   pallets or steel pallets, or as your request

Payment   Terms

TT,L/C, we   can contact in detail

Delivery   Time


High nickel austenitic nodular cast iron has also made progress. It has been successfully applied in petroleum production machinery, chemical equipment and industrial furnace devices.

In the aspect of acid resistant nodular cast iron, the microstructure of rare earth high silicon nodular cast iron produced in China is smaller, uniform and denser than that of ordinary high silicon nodular cast iron. As a result, its corrosion resistance is increased by 10% ~ 90%, and its mechanical strength is also improved significantly.

Rare earth can spheroidize graphite. Since H. morrough first used cerium to produce ductile iron, many people have studied the spheroidizing behavior of various rare earth elements, and found that cerium is the most effective spheroidizing element, and other elements have different degree of spheroidizing ability.

casting process web use.jpg

Any Customized Model is available from us

Any question, please feel free to contact us
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Hunan Castking Foundry Technology Co.,Ltd