Q390B/C/D/E,Q420B/C/D/E,Q460B/C/D/E,Q550D,Q690D,WH60A,IE0650

,WH70B,Q690CFD,S690QL and so on

Used in the industry of construction machinery, steel structure, bridge, construction and so on.

It has good strength, toughness and welding performance. It also used in workshop making,

general construction and all construction machinery, like mining enterprises and drillling

machine, electric shovel, electric wheels skip, mining truck, excavator, loader, bulldozer,

crane, coal mine hydraulic support and other structural parts.