It is a dedicated machine for flattening composite steel pipes, seamless steel pipes, carbon steel pipes, alloy pipes, stainless steel pipes and other steel pipes. The fully digital measurement and control system can realize the two test methods of prescribed distance flattening and closed flattening to realize closed-loop control of force, displacement and deformation. The test software works in the Windows Chinese environment, with powerful data processing functions, and the test conditions and test results are automatically saved. , display and print. The test process is all under computer control. The test machine is an ideal and cost-effective test system for scientific research institutes, metallurgical construction, national defense industry, colleges and universities, machinery manufacturing, transportation and other industries.