D400 cast iron manhole cover

D400 cast iron cover for main road of city municipal construction

Material: cast iron, ductile iron
GJS500-7 & EN124
Size: customized or standard
LOGO embed: available
Loading ability: from B125 to F900
Certification: CE, ISO

Product Description

We are manufacturer for making D400 cast iron cover; Our manhole covers produced and tested according to EN124 standard;

Castking has more than 800 workers and 2 advanced produce line, can make more than 1000pcs manhole covers each day.

Since 1993, we started to produce D400 cast iron cover, now, we have exported cast iron covers and frame to more than 50 countries and regions.

D400 cast iron cover is one of the most common manhole covers. D400 means a load of 400KN, which is 40 tons. This can be applied to general main roads.

It can be used as a manhole cover, or drain cover, with a service life of more than 30 years, widely used in road construction, municipal engineering and other industries.

China’s development is inseparable from cast iron cover, these small manhole covers provide very great support for China’s modernization development. Now, we also sell them to other countries to provide assistance for infrastructure in other countries.


ShapeRound, square, rectangular
Diameterfrom 200-1500mm
Depthfrom 10-400mm
MaterialDuctile iron GJS500-7
Loading abilityEN124
LockLock and hinge available
SizeCutomized size and shape available

Loading class

Manhole cover loading class, there are 6 different class according to EN124 standard, it`s A15, B125, C250, D400, E600, F900. Different loading class means different application. Normally, A15, B125, C250 for pavement, depestrain, park; D400 E600 for main road and highway; E600-F900 for airport, dock.

GroupLoading classApplication
#. Group 1A15Pedestrain, pavement
#. Group 2B125Driveway
#. Group 3C250Car parks
#. Group 4D400Main road, highway
#. Group 5E600Industrial area
#. Group 6F900Docks & airport

Contact us online