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This is who we are

We at Wienstroth Wärmebehandlungstechnik GmbH are a company with global operations and a highly motivated workforce engaged in formulating special solutions for the heat treatment of steel.

Founded in 1996, today we rank among the leading plant suppliers in the thermochemical heat treatment technology segment.

Since April 2021, we have also been active in Nanjing-Lishui with our subsidiary Wienstroth (Nanjing) Heat Treatment Company, Ltd. We have moved into our office and production hall so that we may now also serve the Asian market directly with our team.

Our references speak for themselves! See for yourself.

We are engaged in manufacture

Equipped with the latest CAD systems, we do not just undertake the entire planning, coordination and design of orders commissioned, but also have manufacturing facilities spanning an area of 3,000 square metres.

Our manufacturing facility can cater to systems that are 80 metres in length being constructed by crane units (totalling 100 tonnes), and being fully installed and provided to customers for their preliminary acceptance.

At the beginning of 2017 we finished our storage building with a usable area of almost 300 m². Our last construction project on our premises was completed at the beginning of 2018. With the expansion of the additional office and production space, Wienstroth Steuerungstechnik GmbH ( was able to move into their own rooms.


Plant construction with continuously and intermittently running furnace systems specifically developed in line with customers' specifications:

We offer modernisation of heat treatment plants, with a focus on the following:

process optimisation, capacity enhancement, primary and secondary energy saving, procedural and process automation, quality assurance and reproducibility