Brief introduction of Straight seam highfrequency welded pipe roll forming machine: Welded steel pipe also called welded steelpipe, commonly they are made by steel or steel strip slitted by slitting line.After leveling, the coil will be changed to shape of pipe by roll formingprinciple. The production process issimple but the production efficiency is high efficient. The Straight seam highfrequency welded pipe roll forming machine can produce variety specification insizes from 10 to 127mm, in shapes, it could be square, round, oval and uncommonshapes. Since the thirties of the 20th century, with the rapid developmentof high quality cold rolling strip steel rolling production and progress ofwelding and inspection technology, continuously improve the quality of weldingsteel pipe specifications. Now the welded pipes are increasing and used in moreand more fields especially in heat who spare tube, decorative tube, lowpressure fluid pipe which are replacing seamless steel pipe. Straight welded pipeproduction process is simple, high production efficiency, low cost, rapiddevelopment. The Straightseam high frequency welded pipe roll forming machine is composed by thefollowing elements: Hydraulic Single-arbor uncoiler with peeler Five-roll Flattener Shearing & butt welding machine Spiral Accumulator Forming and sizing mill GGp300KW Solid state H.F. Welder+ 2Elect