Manufacturing Facility

Equipped with advanced technological facilities on melting, casting, forging, heat treating and mechanical machining, our factory has formed 9 professional complete roll manufacturing lines of cast steel, cast iron and forged steel rolls such as strip mill rolls, heavy section mill rolls, wire & bar rolls, special shaped rolls and small-sized cold rolls and specialized production lines of bloom and slab CCM, coke oven equipments and wind power products. Annual production capacity of mill rolls is 180,000 tons, metallurgical equipment is 80,000 tons.

Main Plants Capacity

is the core of our company and undertakes all of scientific research work. The company specially produces and supplies all kinds of roll used for hot strip mill, cold strip mill, plate & heavy plate mill, large-sized section mill, universal mill etc. The annual production capacity of cold roll is 30,000 tons, hot roll and back-up roll is 100,000 tons.

(1) Our Small Cold Roll factory specially produces and supplies cold forged steel work rolls, intermediate rolls and back-up rolls with unit weight below 4 tons, barrel diameter below or equal to 600mm. Rolls are mainly used in single (tandem) stand cold mills, temper mills, straighteners with strip width below or equal 1500; electric steel and stainless steel multi-roll cold rolling mills; non-ferrous mills such as copper strip and foil mills, aluminum strip and foil mills. The annual production capacity is 9,000 tons.

(2) Our Wirl & Bar Mill Roll factory specially produces and supplies work rolls and back-up roll for bar mill, wire mill, small/mediate-sized section mill, narrow and medium-wide strip mill. The annual production capacity is 26,000 tons.

(3) Our Special Roll factory specially produces and supplies rolls and roll rings for seamless tube mills, roll rings and shaft for H-beam and universal  structural mills, rolls for large-sized high frequency straight welding mills (diameter over 508) etc. The annual capacity is 15,000 tons.

(4) Our Equipment Manufacturing factory specially produces and supplies all types of bloom, slab, special section blank for continuous casting machine, coke oven armature, complete sets of coke dry quenching equipment, heat treatment equipment for steel plate surface, cold rolling decoiler, wind power spare parts etc. The annual production capacity is 80,000 tons. 

Technical Supports

The factories of CNBM invested 2.3 billion RMB for large-scale technical innovation during the “Eleventh Five -Year Plan”. Our company has completed equipment and technology upgrade transformation at the end of 2008, which was concentrated on three projects, production line of centrifugal casting rolls for hot strip and plate mill, forged roll for cold/hot strip mill, national class technology center and roll material lab. Through upgrade transformation, the following targets have been achieved:

(1) It becomes the world’s biggest specialized mill roll maker with the largest production scale, the most complete specifications of products and the most extensive coverage of various rolls used on rolling mill. 

(2) The technology of equipments has reached international leading level.

(3) “Mechanization, automation, intellectualization, digitization” of equipments obviously improve the quality control ability.

(4) New types of research instruments improve the R&D capacity of products.

Products & Specification：