PHJ series H-beam welding and straightening machine is an advanced and efficient H-beam welding production equipment for producing and welding H-beam. It can complete the precise assembly and assembly of H-beam, carbon dioxide or submerged arc welding welding and flange plate welding deformation correction at the same time on the same machine. The workpiece is assembled and welded as "I", which is suitable for the production of light H-beam with weld leg height less than 8mm. The H-beam integrated machine occupies a small area and has high output per unit production area. The lifting and overturning of various processes in the production of conventional multiple H-beam production equipment are omitted, and the efficiency is greatly improved. It is the most ideal equipment with high technology content and light welding H-beam. The machine can not only produce H-section steel, but also T-section steel. It can produce not only symmetrical section steel of wing plate, but also unsymmetrical section steel