Ultra-thin precision stainless steel strip (steel pipe) won the bid for Ministry of Industry and Information Technology of the People’s Republic of China "2017 industrial transformation and upgrading (China Manufacturing 2025) - key project for improving the technological capacity of key new material industry chain".

A complete set of new technology and equipment for precise shape control was invented. The convex roll box structure was innovatively designed, and the lateral clearance elimination technology and the intermediate roll pushing technology were invented, realizing the improvement of the production efficiency and precision control level of the wide width cold rolling mill.

The invention of the high-pressure opposite spray cleaning-squeezing high-efficiency degreasing technology and the rolling oil fractionation purification technology has significantly improved the cleanliness of rolling oil and the service life of filter element, and ensures the surface finish of sheet and strip.

Based on the research, accumulation and mastery of the evolution law of heat and force on the structure and properties of stainless steel sheet and strip, the rolling process and annealing process of different kinds of stainless steel sheet and strip is designed, and a complete set of cold rolling process technology of precision stainless steel sheet and strip with uniform structural stress at large reduction is established.

The evaluation committee of scientific and technological achievements of metallurgical industry, headed by Academician Gan Yong, a famous metallurgical material scientist, made an evaluation:

“It has realized the mass production of ultra-thin precision stainless steel sheet and strip with the minimum thickness of 0.03mm, the flatness of 11, the surface roughness of 0.03~0.18μm and the gloss of 580~948GU”, “it invented a complete set of new technology for precise shape control, realized the large-scale production of ultra-thin precision stainless steel sheet and strip with the largest width of 1250mm and the thickness of 0.05 ± 0.001mm in the world ","it has reached the leading level in the world".

The invention of hydrogen circulation purification molecular sieve drying technology in bright annealing furnace meets the stringent requirements of bright heat treatment process on hydrogen purity, dew point and oxygen content in the furnace, and significantly improves the surface gloss of the sheet and strip.

The invention of nitric acid free surface treatment technology of stainless steel has solved the environmental pollution problem of nitrogen emission from the traditional pickling process.