carbon steel tube 600*600*20 .700*400*28 1, the production line of super-large pipes(600*600*25); the pipe sqecification is 100*100-600*600, with a wall thickness of 2-25mm and a bending/distorting degree of less than 1/1000, made of straight carbon steel...

thick-walled circular pipe diameter changing equipment; can produce circular pipes with a maximum thickness of 24mm 2,production line of high-accuracy cold pipe and opening-type steel section; the pipe specification is 20*20-150*150,with a wall thickness of...

25*25--600*600 and 700*400 , thickness 1-28 mm 1, the production line of super-large pipes(600*600*25); the pipe sqecification is 100*100-600*600, with a wall thickness of 2-25mm and a bending/distorting degree of less than 1/1000, made of straight carbon...