What are the advantages of composite manhole cover

　　Now many areas will use composite manhole covers for installation and use. This manhole cover is made of unsaturated polyester resin. This material can be produced and processed by pressing during manufacturing. Therefore, this ...

How to choose the correct classification of manhol

　　City streets will pay attention to the use of manhole covers, which can ensure that people are more smoothly settled during the passage, and can also play a decorative role. Although for most people, this kind of facility is ver...

Is the higher the position of the radiator, the be

　　Most users know the installation location of the radiator. Usually, the radiator is installed under or beside the window sill. Because this installation is conducive to the convection of the air in the house, the radiator is clo...

What are the maintenance work of cast iron manhole

　　The ductile iron manhole cover we usually see is made of cast iron flat plate. In order to prevent the cast iron flat plate from deforming, we need to know some methods to maintain the cast iron flat plate. We can maintain the c...

Detailed explanation of the performance and produc

　　Ductile iron castings have almost been used in all major industrial sectors, which require high strength, plasticity, toughness, wear resistance, resistance to severe thermal and mechanical shock, high or low temperature resista...

What are the components and applications of ductil

　　Nodular cast iron manhole cover pig iron is an iron-carbon alloy with a carbon content of more than 2%. Industrial pig iron generally contains 2.5%-4% carbon and contains C, SI, Mn, S, P and other elements. It is made from iron ...

Introduction of radiator system

     Heating radiators started early and developed and matured, and they belong to Europe, especially Italy. The age when the heating radiator matured in Europe is recognized as the end of the 19th century. In 1890,...