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Tubes

Precision Tubes

Explore our range of precision steel tubes, available in various grades, dimensions, and specifications for a wide range of industrial applications.

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Standards, Steel Grades and Dimensions

Certificates and Approvals

With certificate 3.1 according to EN 10204, upon request with certificate 3.2

Material and delivery terms

Seamless precision tubes
EN 10305-1 - E235 +C / E235 +N /
E355 +C / E355 +N

Dimensions scope

External dimensions:  6 – 100 mm
Wall thickness:  1 – 12 mm

Precision Steel Tubes

Precision tubes are intended for applications where dimensional accuracy, surface quality, and consistent material properties are essential. Compared to general-purpose tubes, their parameters are specified with stricter requirements regarding dimensions, tolerances, and delivery conditions.

Seamless precision tubes are particularly suitable for manufacturing machine parts, mechanical components, and assemblies where the material must meet precisely defined technological requirements. Correct selection of steel grade and delivery condition facilitates further processing and helps achieve the required characteristics of the finished component.

KÖNIGSTAHL offers seamless precision tubes according to EN 10305-1, including grades E235 and E355 in selected delivery conditions. Available outside diameters range from 6–100 mm and wall thicknesses from 1–12 mm. Availability of specific variants should be confirmed before ordering.

Precision Tubes

Key Properties

  • Dimensional accuracy

    Enables precise integration into designs and manufacturing processes.

  • Surface quality

    Important for machining, assembly, and applications requiring a specific finish.

  • Controlled mechanical properties

    Help match the material to expected loads and technological requirements.

  • Consistency of parameters

    Particularly important in serial production and component standardization.
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Applications of Precision Tubes

Precision tubes are used in:

Machinery

Machinery: industrial machinery and equipment manufacturing;

Components

Production of mechanical components and turned parts;

Automotive

Automotive and transportation industries;

Hydraulics

Hydraulic and pneumatic systems, when the appropriate tube type is selected;

Precision

Structures and assemblies requiring precise dimensional tolerances.

Steel Grades and Delivery Conditions

Tube selection should take into account both the steel grade and delivery condition designation. For example, E235 and E355 identify material grades, while symbols such as +C and +N refer to specific processing or delivery conditions according to the relevant standard.

Not all precision tubes should be considered hydraulic tubes. Hydraulic applications may require additional specifications such as internal diameter tolerances, surface cleanliness, or resistance to specific operating conditions.

Steel sections in a warehouse

How to Choose the Right Tube?

When submitting an inquiry, it is advisable to specify:

  • Dimensions

    Outside diameter and wall thickness

  • Steel Grade

    Steel grade and required mechanical properties

  • Standards

    Applicable product standards

  • Conditions

    Required delivery condition

  • Application

    Intended application of the component.

If machining is planned, requirements regarding machinability and mechanical properties should also be stated.

Not Sure Which Steel Fits Your Project?

Our steel specialists can help you navigate material options and identify the best solution for your performance, processing, and durability requirements.

Contact a specialist