Cold pilger technology

Long products
Cost-efficient and indispensable for many applications

Our cold pilger mills use a special cold forming process which is both cost-efficient and indispensable for many applications. It involves a large number of forming steps to improve roundness, stress homogeneity, and surface roughness of the tubes. You can even apply our cold pilger mills to produce difficult materials beyond the capabilities of other processes.

Cold pilger mill

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Cold pilgering process

Multi-step forming guarantees high-quality seamless tubes

Cold pilgering is a rolling process for metal tubes that reduces diameters and wall thicknesses.

The Process

Located inside the tube is a stationary mandrel (1) which tapers in the rolling direction. This is attached to a long mandrel bar (2) which is secured in, and rotated by, a thrust block. Two dies (3) "form" the tubular stock in the same way that a rolling pin rolls out pastry. These two dies are mounted in a reciprocating saddle (4). Their drive pinions mesh with two stationary racks. That's how the dies rotate back and forth in synchronization with the reciprocating saddle. The saddle, in turn, is moved back and forth by a crank drive in the same way as a piston in the engine of a motor car.

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Your extra benefits
from the cold tube rolling process

  • High range of cross-sections
  • Reduction per pass savings in intermediate processes (annealing, pickling, straightening, cutting)
  • No process-related material losses
  • Improved product eccentricity
  • Close diameter and wall thickness tolerances
  • Excellent surface condition
  • Better microstructure
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Main use

Stainless steel

  • Chemical industry
  • Food
  • Pure gas applications

Antifriction bearing steel

  • Antifriction bearings

Ferritic steels

  • Boiler construction
  • Chemical engineering

Low-alloy steels

  • Boiler construction
  • Drilling and boring
  • High pressure tubes
  • Automotive engineering

Inconel®, Incoloy®

  • Heat exchangers for power plant
  • Chemical engineering


  • Nuclear power plants


  • Plumbing tubes
  • Air-conditioning systems
  • Refrigerators
  • Heat exchangers

Cooper-nickel, brass

  • Seawater desalination plants
  • Marine engineering

Titanium alloys

  • Aeronautical engineering 
  • Medicine


Cold pilger mill equipment

SMS group cold pilger mills achieve large reductions in both diameter and wall thickness. Simultaneously, they significantly reduce eccentricity due to the homogenization of the material flow during forming. This creates the required microstructures in the material.

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Rolling mills

Cold pilgering reduces the need for additional time and cost-intensive process steps such as cleaning, annealing, pickling, cutting, and straightening.

During cold pilgering, a large number of forming steps improve roundness, stress homogeneity, and surface roughness of the tubes. No other cold forming process for tubes offers you so many advantages.

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Tube handling

Tube cleaning, sawing, diameter and wall thickness measuring

Apart from machines and plants for tube production and tool dressing, we also supply a range of facilities downstream of cold pilgering, such as

  • tube inside /outside cleaning facility
  • travelling saws on the run-out side of the cold pilger mill
  • diameter and wall thickness measurement for process monitoring and quality assurance
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Tool machining

Tools perfectly tailored to the rolling process are essential for producing top-quality tubes. That's why our product portfolio also features grinding machines for dressing dies and mandrels.

These are specially designed for machining tools used in cold pilger mills. So you get precisely ground dies and mandrels that ensure consistently high productivity and tube quality.

Electrical and automation systems


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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Emergency support - Remote Service

For easy identification of defects and malfunctions and quick initiation of measures for fault elimination.

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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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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 and Repairs

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

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Maintenance tools - IMMS®

The Integrated Maintenance Management System (IMMS) guarantees effective and economical maintenance.

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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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Spare parts pool

You can draw on our spare parts pool whenever you want exclusive access to a customized range of OEM spare parts.

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SMSgroup Tessarek, Norbert

Norbert Tessarek

SMS group GmbH
Service Cold pilger technology
Ohlerkirchweg 66
41069 Mönchengladbach

Phone : +49 2161 350 1584

SMSgroup Venturini, Stefano

Stefano Venturini

SMS group S.p.A.
Vice President Electrics/Automation Long Products
Via Udine, 103
33017 Tarcento (Udine)

Phone : +39 0432 799364

SMSgroup Pröhl, Frank

Frank Pröhl

SMS group GmbH
Cold Finishing
Ohlerkirchweg 66
41069 Mönchengladbach

Phone : +49 2161 3501523