H-shaped steel can be produced by welding or rolling. Welding H-shaped steel is to cut strip steel with suitable thickness into suitable width, and weld the flange and web together on a continuous welding unit.

Conson Metal Materials currently supports and supplies more than 500 varieties. Since it is difficult to find a suitable distinguishing standard among the many varieties, there is currently no unified classification method.

The invention and use of stainless steel can be traced back to the First World War.