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  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
DI D400 manhoe cover630580730135D400no
All dimensions in mm.

Main business: hydraulic access cover, power manhole cover cover, electric manhole cover intelligent monitoring manhole cover cover, intelligent communication manhole cover cover, intelligent water manhole cover cover, intelligent password lock manhole 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 only 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.

Founded 1993, Cast-King Foundry was a industry leader in exporting EN124-2015 DI D400 heavy duty manhoe cover to many countries, 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.

More Details


Ductile cast iron, grey   cast iron, steel




Sand casting, Shell core   casting


Sewer,   Electronic, Sanitary, telecommunications, sewage, drainage, water,   stormwater, fire protection & etc.

Casting   Tolerance Min.


Machining   Tolerance Min.


Surface   Treatment

Black Bitumen, Spraying   Painting, galvanization,

Unit   weight



Sewer,   Electronic, Sanitary, telecommunications, sewage, drainage, water, storm water,   fire protection & etc.

Technical   Support

experienced   design team


EN124, AS3996, ISO,   ASTM,JIS, ANSI, DIN, BS,




Single   Seal, Double Seal, Bolt Hinge, Removable Hinge, Lock Device, Spring Bar,   Auto-locking Device, Safety-Design, Solid, Vent Cover, Lifting Key Hole,   Rubber/PE Gasket, GRP Plate, Cut-Corner Design, single seal, double seal,   hinge type, ventilated, watertight, airtight, and anti-theft & etc.

 Why 'Ductile Iron

'Spheroid Graphite' or 'Ductile Iron' is a unique form of Iron. which prior to the metal casting process receives crucial mineral additives to produce an exceptionally strong resistance and durable metal, the molecular structure of 'Ductile Iron' gives rise to excellent additional strength and shock load resistance, within structure carbon steel, without steel inheriting corrosion. In today's roads, Covers & Gratings are required to carry increasingly heavy and fast moving traffic, yet the need to keep the roads in service, places free from accidents and theft, additional demands on those Covers and Gratings in terms of speed and ease of access for maintenance of services is essential. 'Ductile Iron' Manhole Covers, Gratings and Frames are fast replacing the conventional 'Grey Iron Manhole Covers, Gratings and Frames on account of uniqueness in its Strength to Weight ratio, Design, Weight and the Cost benefit.

Match-plate pattern:

A match-plate pattern is similar to a split pattern, except that each half of the pattern is attached to opposite sides of a single plate. The plate is usually made from wood or metal. This pattern design ensures proper alignment of the mold cavities in the cope and drag and the runner system can be included on the match plate. Match-plate patterns are used for larger production quantities and are often used when the process is automated.

Cope and drag pattern:

A cope and drag pattern is similar to a match plate pattern, except that each half of the pattern is attached to a separate plate and the mold halves are made independently. Just as with a match plate pattern, the plates ensure proper alignment of the mold cavities in the cope and drag and the runner system can be included on the plates. Cope and drag patterns are often desirable for larger castings, where a match-plate pattern would be too heavy and cumbersome. They are also used for larger production quantities and are often used when the process is automated.

Proven Designs:

Castking's proven range of manhole covers and gully grates are recognized worldwide for quality design and manufacture. Castking's commitment to continuous product development and design development is reflected in the latest innovative additions to the already proven and established product range.

 Full Load Class Range: Castking's manhole covers and gully grates castings are available to suit most applications from light duty domestic covers to heavy duty, high performance Class D loading castings suited to the most demanding road conditions.

 Solution for every casting needs right from simple to complex object.

 Benchmark for technology and innovation in casting industry

 A globally competitive and environmentally responsible casting unit.

 The preferred supplier of engineered, net-shape metal components.

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