HOT LINE:+86-15116381985

Home - Our Product

Product list

Please contact us

  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

Square Manhole Cover&Frame

Catalog NumberA-Cover SizeB-Clear OpeningC-Frame SizeD-Frame HeightE-Duty ClassF-Lockable
square ductile iron manhole cover750*750680*680900*900105D400yes
All dimensions in mm.

For almost 30 decades,  Cast-King has been dedicating itself to fulfilling what our clients need…quality castings, efficient communication and willingness to build long term partnership. This attitude has been the key in building decade’s old relationships as well as developing new relationships that would last for many years. While longevity may represent complacency for the cooperation, at Cast-King it translates into casting innovation with vast in-house experience from a financially stable company that places its customers’ needs first.

Since 1993, Cast-King Foundry has been a consistent leader in exporting square ductile iron manhole cover all across the world, Just purchase directly from factory, save the money usually earned by a middle company.

Our main market includ Italy, Spain, UK, Middle east, Singapore, South Korea, Japan, Australia,Africa, etc.

OEM & OED is welcomed, look forward to being partner with for your local market.

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

As manufacturer foundry, we look forward to being partner with those who are engaged in whole sale business for building material, any customized high quality mechanical castings and industrial casting are available form us as well.



Customer Required(300-1200mm)


Ductile Iron 500-7


Water supply, airport construction , public road,drainage system etc

Brand Name

CastKing or OEM

Place of Origin

China (Mainland)


black, grey, etc



Loading Pressure

B125, C250, D400, E600, F900


black bitumen coated,epoxy painting


ROUND, Square, recessed, decorative,


1 set


Moulding pressing


30~50 years

OEM service



Iron pallet and wooden case, or as per customers' requirements.

Product Benefits:

1.No inherent scrap value thus reducing risk of theft.

2.Moderate weight and easy installation.

3.Can be used in -30 to 70 degrees environment.

4.30 years of service life.

5.Tested by national security agencies. Compressive, bending and impact resistant. Heat, cold, acid, etc.

6.Corrosion resistance, meet the needs of environmental protection, and reduce the exploitation of mining resources; beautify the city, classify the coloring, and enhance the taste of the city.

Standards and features:

1.high strength. Tensile strength σs≥520MPa, yield strength σs300MPa, same as low carbon steel, three times that of gray iron

2.Good toughness. The impact value is similar to that of medium carbon steel, which is more than 10 times that of gray iron material.

3.Good plasticity. The elongation is as large as 7%, which is similar to high carbon steel, while the gray iron steel has an elongation of zero.

4.Strong corrosion resistance. In the water spray corrosion test, the corrosion amount in 90 days is only one tenth of that of the steel pipe, which is one tenth of that of the gray iron pipe. The service life is twice that of gray cast iron.

casting process web use.jpg

Any Customized Model is available from us

Any question, please feel free to contact us
Your Name:Your Email:
Your Message:

Hunan Castking Foundry Technology Co.,Ltd