Cross-roll straighteners for Chengde pass with flying colours

Three high-precision straighteners have passed delivery inspection at CISDI Equipment Co. in Chongqing.

One φ140mm and two φ114mm cross-roll straighteners will be supplied to Chengde Steel’s φ127mm seamless tube rolling line in China’s Jiangsu Province.

CISDI has previously supplied a piercer mill and mandrel mill for the line.

During three days of tests, all performance parameters met the required standards and the equipment was passed for delivery.

The project team, manufacturer and representatives from Chengde Steel jointly carried out the inspections.

The process included tests on the straightener’s lifting roller seat and travel unit. Multiple working conditions were tested on the angle regulating mechanism, along with inspection of the contact ratio between its roll surface and test sample and the centreline alignment between its stand and the test sample.

A high-precision product, the straightener is designed with a pre-stressed stand and a four-carriage cross-beam structure. It features a separate locking angle, which enables easy alignment of the straightening rolls’ centre.

During development, design and manufacturing, CISDI’s team continually optimised processes, structure, equipment precision and quality.

The straightener is now an impressive new reference for CISDI’s tube rolling line core tech and products.

The assembled cross-roll straighteners, ready to leave CISDI Equipment Co.