Taiyuan Huaxin Cheng Electrical Equipment Co., Ltd. is a high-tech enterprise specialized in the design, development and manufacture of equipment Longitudinal spiral welded pipe equipment, cold-formed steel equipment, sheet and pipe finishing equipment and high-precision slitting line equipment. Taiyuan Huaxin Cheng electromechanical equipment you elaborate pipe sizing method to the inner pipe equipment sizing head Expanding the outer peripheral surface of the weld zone is non-sizing pipe wall in close contact, and at this time sizing head outside As a reference diameter sizing sizing head by setting quantitative expansion expansion open spiral welded pipe equipment, pipe diameter radial force is applied to the inner wall is fixed, so that the wall is plastically deformed radially retracted head sizing, sizing head move to the next adjacent pipe sections until the desired pipe sizing is completed. No cutting process, is a method of pipe sizing device. Pipe from the inside to the feeding tube apparatus Expanding sizing head, and then start the first cylinder, so that the internal sizing mandrel head movement, the sizing stretching apart and close contact with non-weld pipe wall region, and In this case the outer diameter of the sizing head sizing as a reference. Then start the second cylinder, so that by the amount of sizing head expansion set to continue expansion of open radial force is applied to the pipe, so that the pipe is plastically deformed. Finally sizing head retraction is completed. Taiyuan Huaxin Cheng Electrical Equipment Co., Ltd. is a high-tech enterprise specialized in the design, development and manufacture of equipment Longitudinal spiral welded pipe equipment, cold-formed steel equipment, sheet and pipe finishing equipment and high-precision slitting line equipment. Taiyuan Huaxin Cheng electromechanical equipment for welding pipe for your failure to resolve the impact of failure of welded structures, may be caused by many factors, it is not only the design, material selection has an important relationship spiral welded pipe equipment Which is good, but also with this special welding thermal processing are closely linked. Welding will produce a variety of structures hazardous defects, especially cracks tend to be a source of welded structural failure of the welded joint region under the effect of thermal cycling, the performance will decline spiral welded pipe equipment prices, coupled with the area they often become stress concentration area spiral welded pipe equipment, quality assurance, and sometimes deformed in various forms, to cause structural failure resulting in varying degrees of size. These will seriously affect product quality discs, and prematurely in operation Failure welded structure. Failure type in welded structures, the most serious is the failure of brittle fracture, fatigue fracture failure and failure of three types of stress corrosion cracking. Spiral welded pipe equipment, Huaxin Cheng electromechanical, spiral welded pipe equipment factory direct offer from the Taiyuan Huaxin Cheng Electrical Equipment Co., Ltd. Spiral welded pipe equipment, Huaxin Cheng electromechanical, spiral welded pipe equipment factory direct Taiyuan Huaxin Cheng Electrical Equipment Co., Ltd. (www.tyhxc.com) (www.tyhxc.net) this year introduced a new upgrade, the above picture is for reference only, please You call Tel picture on this page or to obtain the latest information, contact: Li.