Rotary tubes for indirectly heated rotary kilns up to 1,250 °C.


Higher working temperature. Extended service life.

Rotary tubes for rotary kilns, from joint development to assembly.

Single-part production and small series production from the heat-resistant steel specialists for industrial furnace construction. Indirectly heated rotary kilns for operating temperatures up to 1,250 °C.

  • Selection of high-performance metallic materials.
  • Extended service life compared to sheet metal tubes.
  • Patented materials Centralloy® HTE and 60 HT R with materials own protective ceramic-like layer for the treatment of production materials of highest purity.
  • Full-service partner from joint development to commissioning.
  • Decades of experience in the field of rotary kilns.

Indirectly heated rotary kilns with added values.

Higher working temperature. Extended service life. Improved product quality.


At S+C, we base our activities on decades of experience in the production of high-quality stainless steel products for industrial furnace construction. We are continuously working to expand our wide range of in-house developed materials to extend our product portfolio in line with industry's requirements.

Our rotary tubes made from Centralloy® centrifugally cast materials have many economic advantages compared to sheet metal tubes. Among other applications, they are used in indirectly heated rotary kilns for the thermal treatment of inorganic pigments, refractory metal powders, high-purity alumina and other bulk materials. Our proposed materials are highly heat-resistant and can be used continuously up to a working temperature of 1,250 °C, which is neccessary in some cases. They offer extremely high functional reliability and a long, trouble-free operation. A significantly increased service life by a factor of 2-3* should be emphasized compared with conventional rotary kilns made of sheet metal. (* depending on the operating conditions)

At S+C rotary kilns can be produced in diameters between Ø50 and Ø1,350 mm and in lengths of up to 20 meters.

All rotary kilns are manufactured at S+C by using the centrifugal casting process. Add-on-parts such as flanges as well as built-in parts such as inlet screws, flippers and dams are re professionally welded to the kiln and usually consist of hot rolled or forged stainless steels. Rotary kilns are usually delivered ready for installation.

We at S+C also fully meet the requirements of your rotary kiln.

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Why rotary kilns
made by S+C?

Rotary kilns for the high temperature range.

Industrial Furnace Construction / Thermal process Engineering.

More than 40 years.

Centralloy® 60 HT R, Centralloy® Micro alloys, CrNi steels, nickel-based alloys.

Development location:
Germany, Lindlar.

Centrifugal casting, if necessary combined with static cast and forged components.

Machining, assembly, welding.

Full-service partner - R+D, failure investigation, materials + application consulting, fabrication, assembly, commissioning, repair.

Repair service of rotary kilns.

Ensure functional reliability and trouble-free operation.

Repair service of rotary kilns. Ensure functional reliability and trouble-free operation. In order to ensure the continuous production as well as the functional reliability of your rotary kiln made by S+C, we offer the following repair service.

We of S+C, have not only the target to meet the requirements of your centrifugally cast rotary kiln, we also want to give you constantly a good feeling of safety by using our products. Repairs are often more cost-effective compared to the purchase of new rotary kilns and conserve resources due to lower consumption of raw materials. Our service consists of the following operations:

  • Examination of the used rotary kiln.
  • Evaluation of the results and decision on parts for reuse.
  • Cutting of the worn parts.
  • Centrifugal casting of new tube segments.
  • Machining, preparation and welding of a new tube sections with the existing parts.
  • Manufacture and welding of flanges.
  • Inspection of the weld seams.

We warm up where others break a sweat.

Innovative stainless steel casting solutions up to 1,250 °C.

Expertise for your products.

We are continuously expanding our expertise in innovative stainless steel products,
helping customers to achieve groundbreaking customized solutions.

Reduce costs with
high-performance materials made by S+C.

We reduce your energy costs and improve your environmental audit.


Heat-resistant nickel/aluminum alloys made by S+C

Together with S+C and our patented heat resistant nickel/aluminum alloys, Centralloy® HTE and Centralloy® 60 HT R, you will take your next step forward towards "Green Manufacturing". The proprietary high-performance material Centralloy® 60 HT R, with which application temperatures of up to 1,250 °C are possible, convinces with its exceptional properties compared to conventional materials.

This optimum material is the industry's most temperature-resistant metallic material for furnace rollers. It is particularly creep resistant and retains its shape even at highest temperatures. Customers who previously used water-cooled furnace rollers in their furnaces switched over to "dry" furnace rollers made of Centralloy® 60 HT R after getting detailed advice of S+C.

35% lower energy costs.
Up to $2.3 million savings per year*

* Model calculation. Furnace-specific benefits must be considered specifically.

Heat-resistant alloys made by S+C.

The optimization of heat-resistant components for a longer service life and better sustainability is now one of the main topics in the equipping of new and existing furnaces. Important aspects in our consulting are operating temperatures, furnace atmospheres, heating, heating curves, product quality, service life expectancy, material selection, etc.

The optimum price-performance ratio is achieved above all by solutions tailored to the individual application.

In the field of heat resistant alloys S+C supplies the following materials:

  • Nickel/chromium alloys
  • Nickel-chromium-tungsten alloys
  • Microalloyed nickel-chromium-tungsten alloys
  • Nickel-chromium-tungsten-cobalt alloys

Heat-resistant stainless steel castings made by S+C.

Whether corrosion resistant, heat resistant or wear resistant, our experts will always find the right solution to ensure that your products perform best. In addition, S+C is certified according to ISO 50001:2018 for energy management systems. This means that energy-saving potentials are identified and leveraged in the manufacturing plant, all in the spirit for a more sustainable production, which includes also recycling.

Customers can offer S+C used stainless steel components so that they can be directly returned to the material cycle or can be professionally recycled.

In the area of heat-resistant stainless steels, S+C supplies the following materials:

  • Ferritic-austenitic cast steel (duplex)
  • Austenitic cast steel (chromium/nickel steels)
  • Microalloyed austenitic cast steel

Economic added value

Example calculation:
furnace rollers in a heat equlization furnace.

A customer who had previously used water-cooled furnace rollers in his furnaces switched to "dry" furnace rollers made of Centralloy® 60 HT R ,after detailed advice from S+C. The higher initial cost compared to conventional water-cooled rollers paid off in lower operating costs and other benefits: By switching to dry furnace rollers made of Centralloy® 60 HT R (360 mm or 425 mm), energy consumption and thus energy costs were reduced by up to 35% annually.

Based on our customer's entire furnace (capacity 4 million tons/year) and taking the longer service life of our furnace rollers into account (50 to 125%), this results in savings of between USD 1.8 and 2.5 million per year.


The lower energy consumption and the lower raw material requirements for the production of the furnace rollers also have another advantage: both protect the environment, which is of increasing importance for companies that are operating sustainably.


Let's talk about your requirements.

Our rotary kilns for industrial furnaces. We also have the perfect solution for your requirement. Get to S+C and our expertise in the development of indirectly heated rotary kilns up to 1250 °C.

Axel Korb

Area Sales Manager - Western Europe | Special Products +49 2266 92-417

Rotary kilns made of Centralloy® 60 HT R at our customer

Special requirements for rotary kilns in the high-temperature range.

Challenge: XERION manufactures electrically heated rotary kilns for the high-temperature range. If the working temperatures reach continuously a range between 1200°C to 1250°C, the requirements on the tubes become particularly high. The challenges on rotary kilns are high temperature stability, good abrasive wear resistance, the requirement for purity of the production materials and the possibility of good machinability / weldability.

Solution: Rotary kilns made of Centralloy® 60 HT R. Due to the excellent temperature stability of this alloy, rotary kilns made of Centralloy® 60 HT R are u. a. particularly suitable for setting up gas-tight plants, e.g. for vacuum or inert gas technology. In addition, build-in parts such as flippers can be easily welded to the rotary kilns, which is not possible with tubes made of mineral glass or ceramics. S+C’s rotary kilns made of Centralloy® 60 HT R centrifugal castings are also far superior to those made of longitudinally welded tubes in terms of service life and dimensional stability, and have proved successful at our customer XERION BERLIN LABORATORIES GmbH since their first use.

Solution for the application temperature of 1250°C continuous temperature.

Dr.-Ing. Uwe Lohse

S+C's centrifugally cast rotary kilns are our first choice in the high temperature range >1200°C. Their lifetime, dimensional stability and abrasive wear resistance is very good.