This production line consists of CNC cutting machine, H-beam automatic assembly machine, H-beam gantry automatic welding machine or double columnbeam automatic welding machine, H-beam flange straightening machine, Hbeam shot-blasting machine etc. the production craft work is operated machine, and the work piece can be overturned
and transported by crane. The whole production with merits of agility and the production efficiency can be improved by adding equipment on different craft work.