High frequency welding speed is 20--30 times faster than submerge-arc welding; best method of producing H-beams steel;save steel 10--30%, compared to hot--rolled H-beams steel Generally, hight:200---600mm width:100---250mm web thickness:3.0----10mm flange thickness:3---12mm standard cutting length:6m,7m,8m,9m,10m,11m,12m, The products out of above size,cutting length can also produced according to your request.If you like,T-beams can be produced too. Finished products can be oiled and coated as to your require