Large pipe use: used for a paving engineering machinery compaction paver (also called vibratory roller, roller, paver, etc.) products, guide column components;

Features: It belongs to a kind of high-precision shaft and tube parts. The tube has a large specification, and the outer circle is integrally ground. The inner holes and end faces at both ends are provided with mounting holes and positioning holes. The main processing difficulties are large in specification, long in length, high in roundness and cylindricity of the shaft. The mounting holes at both ends have angular requirements and are difficult to ensure the position;
Requirements for large pipe process: blanks are generally made of customized thick-walled steel pipes. The main processes include: chamfering of inner holes-rough turning excircle-finish turning excircle-drilling end face holes, tapping-grinding-electroplating-finish grinding and other processes. The main processing equipment includes numerical control lathes, cylindrical grinding machines, drilling machines (or processing centers) and other equipment.
Key inspection items: surface roughness, roundness, cylindricity, coaxiality, position and other items; Key inspection equipment: special position inspection tools, large and medium-sized precision coordinate measuring machines and other high-precision inspection and test equipment.