The host adopts a four-screw structure, with the crossbeam and base made of a whole cast steel structure. The rigidity and structural stability of the frame are superior to that of a two-column structure, making it easier to measure the elastic deformation of the sample. The microcomputer controls automatic continuous stable loading, automatic load maintenance, automatic data collection, storage, curve drawing, and automatic printing of test reports.

This machine is mainly used for testing the ring stiffness, ring flexibility, and flatness of various pipes. According to the special needs of users, it can also add three functional tests of a universal testing machine (i.e., compression and bending). It is a dedicated testing machine for ring stiffness, complying with the new standard GB/T 9647-2015.

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