... oil urn, device for fixing position. It is devided as H-beam steel automatic spot-welding machine, H-beam steel spot- ... straight CNC flame cutting machine, H beam assembling Machine, gantry automatic submerged arc welding machine, H beam flange straightening machine, H beam shot ... oil urn, device for fixing position. It is devided as H-beam steel automatic spot-welding machine, H-beam steel spot- ...