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ANDRITZ receives order for second expansion stage of the Walsin Lihwa cold-rolling mill for stainless steel, Taiwan


International technology Group ANDRITZ has received an order from Walsin Lihwa to supply a stretch-bend-leveling line, a rolling mill, and a regeneration plant for the stainless steel cold-rolling mill in Taichung, Taiwan.

Start-up is scheduled for the third quarter of 2016.

ANDRITZ had already received an order from Walsin in 2010 to supply the cold-rolling mill with an annual capacity of 350,000 tons.

The tension leveling line with integrated two-high skin-pass mill will process stainless steel grades AISI 200, 300, and 400. With the S6-high rolling mill, it is possible to roll hot-rolled steel with a width of 1,600 mm to a thickness of down to 0.5 mm without preliminary annealing.

In addition to optimizing its production processes, Walsin Lihwa will also be setting new standards in terms of environmental protection in stainless steel production with this order: The waste pickling liquor produced in the pickling process is treated in a Pyromars mixed acid regeneration plant, the acids of the rinse water are recovered in an additional ANDRITZ ZEMAP plant (Zero Effluent Mixed Acid Pickling), and the water loop is closed – thus the pickling line will be the first one worldwide which can be operated practically free of nitrate.

Walsin Lihwa is an established producer of stainless steel, copper, and aluminum long-products. The company has been producing hot-rolled stainless steel strip since 2003 and also started production of cold-rolled strip in 2012 with the plant in Taichung.

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The ANDRITZ GROUP is a globally leading supplier of plants, equipment, and services for hydropower stations, the pulp and paper industry, the metalworking and steel industries, and solid/liquid separation in the municipal and industrial sectors. The publicly listed, international technology Group is headquartered in Graz, Austria, and has a staff of around 24,100 employees. ANDRITZ operates over 250 production sites as well as service and sales companies all around the world. The ANDRITZ GROUP ranks among the global market leaders in all four of its business areas. One of the Group’s overall strategic goals is to strengthen and extend this position. At the same time, the company aims to secure the continuation of profitable growth in the long term.

The business area is one of the leading global suppliers of complete lines for the production and processing of stainless steel, carbon steel, and non-ferrous metal strip. These lines consist of equipment for cold rolling, heat treatment, surface finishing, strip coating and finishing, punching and deep drawing, and for the regeneration of pickling acids. In addition, the business area supplies turnkey furnace systems for the steel, copper, and aluminum industries, as well as laser and resistance welding equipment for the metalworking industry.

The Schuler Group, Germany, fully consolidated as from March 1, 2013, is also part of the business area. As global market and technology leader in metal forming, Schuler supplies machines, production lines, dies, process know-how, and services for the entire metalworking industry. Its customers include car manufacturers and their suppliers, as well as companies in the forging, household equipment, packaging, energy, and electrical industries. Schuler is also the market leader in coin minting technology and offers system solutions for the aerospace and railway industries.

Pickling lines can be operated free of nitrate using ZEMAP (Zero Effluent Mixed Acid Pickling) plants from ANDRITZ.

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Michael Buchbauer
Head of Corporate Communications
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