Aiming at the problems of large installation deviation,large amount of high-altitude welding,difficult high-altitude operation,high labor cost and difficult disassembly during maintenance,the main points and difficulties of the support are analyzed from the aspects of design,machining and installation.A new type of detachable support for steam pipeline of overhead torch attached tower is developed and applied.The new type of support can increase the reliability of the support,reduce the difficulty of high-altitude operation,reduce the cost of project implementation,and have the function of detachable.