Northwest aluminum super-sized thin-walled pipe has been successfully produced and passed a preliminary inspection. Because large-sized thin-walled pipe materials have been limited by the ability of equipment such as extrusion, stretching, and straightening in the past, production is difficult. The relevant technical standards only stipulate the requirements for thin-walled pipe materials with an outside diameter of less than 120 mm. The trial-produced pipe materials The 45MN reverse extrusion machine is used to produce tensile wool, 80-ton puller and 9-roll straightener are used for drawing and straightening. After pre-inspection, the wall thickness difference of the finished pipe is less than 0.3mm, and the straightness is less than 1mm per meter. In line with the user's requirements, the current pipe and other four special pipe materials are waiting for user acceptance at the site. At the same time, the outside diameter of the pipe is more than 200mm, and the wall thickness is less than 3.5mm. It is a large-size cold drawn thin-walled pipe produced by the branch company.