20-High mills

Cold Rolling
Safe and reliable production of challenging products

Since the fifties of the last century, single-stand 20-high mills have been part of SMS group’s product range. Today, SMS group ranges among the leading manufacturers of 20-high mills. Since the first installations, the mills were continuously further developed. Many of the first installations are still operating, which gives proof of the excellent quality and robustness of this mill design. Depending on the application, 20-high mills come in different sizes and in two versions: the closed, robust MonoBlock or the more flexible SplitBlock type. They can fulfill any material and surface requirement. Apart from the main application stainless steel, they can also be used for the production of silicon steel, copper and copper alloys as well as for titanium strips. Beside the X-Roll mechanical equipment and the X-Pact electrical and automation systems, SMS group also supplies customized lubricants. These X-Lub rolling oils are finely adjusted to the rolling technology of SMS group, ensuring perfect strip surface quality and economical consumption.


MonoBlock: the powerhouse of the reversing mill MonoBlock: the powerhouse of the reversing mill MonoBlock: the powerhouse of the reversing mill MonoBlock: the powerhouse of the reversing mill

20-high mill in MonoBlock design

Best in its class for extremely hard material grades

Compact and robust, this stand comes with superb rigidity. That makes it ideal for rolling even the hardest material grades, e.g. AISI 200 /300 stainless steel. You can expect reductions of up to 90%. Furthermore, finely meshed mechatronic systems including advanced actuators, thickness and flatness control systems, as well as sustainable filter systems guarantee efficient production plus excellent strip quality.

SplitBlock: upper and lower roll sets with flexible gap SplitBlock: upper and lower roll sets with flexible gap SplitBlock: upper and lower roll sets with flexible gap SplitBlock: upper and lower roll sets with flexible gap

20-high mill in SplitBlock design

Proven effective for challenging final products

SplitBlock stands from SMS group are capable of rolling a large product mix of material grades and thicknesses. Split into an upper and a lower half, the stand opens wider to accommodate larger-diameter work rolls. This design provides easy access during roll changing. It also simplifies the threading procedure.


Maximum utilization of precious material High-end actuators, controls, and support systems:

You face constantly increasing demands on product quality and production efficiency. That’s why we equip our 20-high mills with a package of high-end rolling technologies so you can rely on smooth production and high yields. Included in these solutions are roll-gap actuators, thickness and flatness control, and advanced support systems.

Semi-automated roll changing Semi-automated roll changing Semi-automated roll changing Semi-automated roll changing

Roll change robot
High-speed roll changing

What saves you serious money is our equipment that cuts non-productive times in your cold rolling mill. Take for instance our quick roll change solutions. You can choose between semi-automated and fully automated systems. The most advanced option is the high-speed roll change robot.

Basic design of the Nipco® oil wiper system Basic design of the Nipco® oil wiper system Basic design of the Nipco® oil wiper system Basic design of the Nipco® oil wiper system

Nipco® oil wiper system
Highly efficient and innovative

You rightly expect perfect strip surfaces from our rolling mills. Dedicated to just that is the Nipco® wiper system. This joint development by SMS group and Voith represents a new dimension of efficiency and effectiveness of wiper systems in cold rolling mills.

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Modular design
Shorter erection and commissioning times

Characteristic of our 20-high mill stands is the large share of in-house manufacturing. Prior to delivery to the customer, they are preassembled in our Hilchenbach workshops in Germany, complete with piping and cabling. Due to their modular design, the mills can be shipped in a single delivery.

Supafine® filter system Supafine® filter system Supafine® filter system Supafine® filter system

Supafine® filter system
Ideal for fine-filtering rolling oil

Our Supafine® filters are designed for micro-filtration of the low-viscosity mineral oils applied in cold rolling stainless steel. Yet it often happens that today’s widely used pre-coated cartridge filters cause problems with waste disposal. Unlike these old types, Supafine® filters do not require any filtering agents.

Selected References

Electrical and automation systems

X-Pact® 20-High Mathematical Model

Physical process model to calculate the optimum set-points for the 20-high actuators (mono block or split block) - online or offline version

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X-Pact® 20-High Roll Stack Geometry Validation

Offline simulation of possible roll combinations

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X-Pact® Advanced Thickness Control

Highest quality even during acceleration and deceleration

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X-Pact® Coiler Control

Technological control system to ensure best product quality and high process stability during strip winding on up- and down coilers.

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X-Pact® Mill Stand Control (TCS)

Technological Control System to ensure highest product quality (HGC, WRB, IRB, CVC®)

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X-Shape Flatness Measurement and Control

Stand-alone measuring system for flatness control perfectly tailored to your process requirements.

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Digital twin

Digital counterpart of a customer-specific plant

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Plug & Work

3D real-time simulation of technology prior to installation

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Product quality analyzer (PQA®)

Solution for smooth process flow and constant high quality

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Remote service

Always at your side, quickly and dependably, worldwide

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Upgrade Package Basic Automation

New state of the art hardware, latest development software

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Safeguarding plant lifetime

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X-Pact® Business Intelligence

Systematic analysis of data in an electronic form

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X-Pact® Drive

Low voltage frequency converter as integral part of X-Pact®

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X-Pact® Energy Advisor

Energy management for metallurgical plants and rolling mills

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X-Pact® MES 4.0

Production planning and scheduling for all production units in the plant

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X-Pact® Process Condition Analyzer (PCA)

The "transparent" plant

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X-Pact® Process Guidance

New standard for the future automatic control of complex plants

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X-Pact® Sense

Intelligent sensor system and camera-based solutions

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X-Pact® Vision Mobile Operation

Easy access on process results - Full information and control everywhere

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X-Pact® Vision Operation and Visualization

Innovative HMI and new control station

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Drive Systems

More reliability in the drive train due to Drive Systems provided by SMS group.

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Digital documentation: First step to a smart plant.

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Equipment check

Regular inspections and maintenance form the basis for safeguarding the efficiency of your equipment.

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Genius CM®

The Genius Condition Monitoring includes a modularly designed, permanent online monitoring system.

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High-torque spindle for rolling mills

The new Sieflex® HT gear-type self-aligning spindle is a key to greater rolling torques and forces.

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Long-term maintenance services

SMS group offers you the full range of services along the value chain, while you can focus entirely on your core competences.

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Maintenance & Repairs

What we mean by condition monitoring is constant analysis of ongoing machine operations.

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Safety Locator

Protect your most valuable asset - your employees - with the SMS group Safety Locator!

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Smart Maintenance

Digitalize your maintenance with SMS group!

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WearComp® - A revolution in maintenance management

Grease lubrication is an expensive and time consuming affair. Components made from the patented compound material WearComp® are self-lubricating.

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X-Roll cold rolling mill for BSSB

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20-roll cold mill from Goldsky - Specialized in Titanium



SMSgroup Altendorf, Birger

Birger Altendorf

SMS group GmbH
Service Cold Rolling Mills
Wiesenstraße 30
57271 Hilchenbach

Phone : +49 2733 29 2938
Fax : +49 2733 29 772938

SMSgroup Böttner, Detlef

Detlef Böttner

SMS group GmbH
Head of Sales Electrics/Automation Cold Rolling Mills
Wiesenstrasse 30
57271 Hilchenbach

Phone : +49 2733 29 1257
Fax : +49 2733 29 771257

SMSgroup Haentjes, Michael

Michael Haentjes

SMS group GmbH
Technical Sales Processing Lines
Eduard-Schloemann-Str. 4
40237 Düsseldorf

Phone : +49 211 881 5207
Fax : +49 211 881 775207