... JIS3101 UseageThey can used for building factory, ordinary contraction and all kinds of engineering machinery, such as Drills, shovel, motor dump trucks, ... mining trucks, excavators, loaders, bulldozers, various types of cranes, coal mine hydraulic support and other mechanical equipment used ... City,Henan Prov. ChinaProducts Showroom on Alibaba.com 2012 Hot Sale Low Alloy Structural Steel