Precision tubes

Cold drawing ensures two-place decimal precision for diameter and thickness Guaranteed by Tecnofar.

Tecnofar S.p.a.’s precision tubes are cold-drawn on a drawing bench or using a drum-type machine with a floating mandrel.

The technology adopted by our production departments guarantees diameters and thicknesses with two-place decimal precision.
Tried and tested procedures, meeting the most rigorous quality requirements, are employed throughout every stage of the manufacturing process.

Its pursuit of ever higher quality standards convinced Tecnofar S.p.A. to produce its own semi-manufactured products internally, starting with strip welding.
The Company also has its own tube cutting department, whose modern equipment makes it possible for us to supply cut pieces just a few millimetres in length and fully deburred.

At the request of the customer, we can add special features to tubes, including folds, countersinks and holes. Tecnofar S.p.A.’s precision tubes are available in a variety of formats.

Welded tubes in drawn rolls

Standard production range

  • OD 0.35 to 12 mm
  • Thickness 0.12 to 1 mm

Standard tolerances

From (mm): 0.35
To (mm): 1
ID Tolerance: +/- 0.02


From (mm): 1.01
To (mm): 3
ID Tolerance: +/- 0.03


From (mm): 3.01
To (mm): 12
ID Tolerance: +/- 0.04


We are open to considering special tolerances based on your needs.

Standard testing

  • Air testing at 8 bar
  • Visual inspection of surfaces/cleanliness
  • Testing with EN 10204-2.2 Certificate
  • Dimensional inspection

Tests on request

  • Testing with EN 10204-3.1 Certificate
  • Air testing underwater, up to 200 bar

State of the material

  • Annealed tubes are heat treated in a controlled atmosphere, in accordance with technical regulations in force
  • Unannealed
  • Semi-annealed

Finishes

  • Polished from the drawing process
  • Pickled
  • Washed
  • With metre markings
  • Fixed length

Roll sizes

  • Inner diameter 600 mm
  • Outer diameter 800 / 1000 mm

Type of packaging

Palletized cartons:

  • 100 x 100 x H 100 cm
  • 75 x 75 x H 110 cm

Welded tubes drawn in bars

Production range

Outer diameter

from 0.3 to 20 mm

Thickness

from 0.1 to 2 mm +/- 10%

Length

from 1000 to 4000 mm +/- 1 mm
from 4001 to 8500 mm +20 mm

Standard tolerances

From (mm): 0.3
To (mm): 1
OD Tolerance (mm): +/- 0.02
ID Tolerance (mm): +/- 0.03


From (mm): 1.01
To (mm): 3
OD Tolerance (mm): +/- 0.03
ID Tolerance (mm): +/- 0.04


From (mm): 3.01
To (mm): 12
OD Tolerance (mm): +/- 0.04
ID Tolerance (mm): +/- 0.05


From (mm): 12.01
To (mm): 20
OD Tolerance (mm): +/- 0.05
ID Tolerance (mm): +/- 0.06


We are open to considering special tolerances based on your needs.

Standard testing

  • Dimensional inspection
  • Testing with EN 10204-2.2 Certificate
  • 100% eddy-current testing after straightening
  • Mechanical testing: traction, hardness, bend, flange
  • Visual inspection of surfaces/cleanliness

Tests on request

  • Testing with EN 10204-3.1 Certificate
  • 100% pneumatic pressure testing of seal
  • Metallographic testing
  • Corrosion testing

Mechanical properties

  • Degree of hardness can be modified based on customer needs, through variations in the drawing process.
  • Heat treated in a controlled atmosphere to attain malleability and consistent mechanical properties
  • It is possible to attain high degrees of hardness and high mechanical performance, depending on the material requested.

Finishes

  • Annealed in a controlled atmosphere
  • Polished from the drawing process
  • Satin finish
  • Cut to size and deburred inside / outside
  • Washed
  • Pickled

Type of packaging

  • Wooden crates
  • Cardboard boxes

Welded tubes drawn and cut in pieces

Production range

Outer diameter

from 0.3 to 20 mm

Thickness

from 0.1 to 2 mm +/- 10%

Length

from 2.8 to 1000 mm

Standard tolerances

From (mm): 0.3
To (mm): 1
OD Tolerance (mm): +/- 0.02
ID Tolerance (mm): +/- 0.03


From (mm): 1.01
To (mm): 3
OD Tolerance (mm): +/- 0.03
ID Tolerance (mm): +/- 0.04


From (mm): 3.01
To (mm): 12
OD Tolerance (mm): +/- 0.04
ID Tolerance (mm): +/- 0.05


From (mm): 12.01
To (mm): 20
OD Tolerance (mm): +/- 0.05
ID Tolerance (mm): +/- 0.06


Tolerance on the minimum length +/- 0.10 mm

We are open to considering special tolerances based on your needs.

Standard testing

  • Dimensional inspection
  • Testing with EN 10204-2.2 Certificate
  • Mechanical testing: traction, hardness, bend, flange
  • Visual inspection of surfaces/cleanliness

Tests on request

  • 100% length check
  • Testing with EN 10204-3.1 Certificate
  • Metallographic testing
  • Corrosion testing
  • Special processes

Mechanical properties

  • Degree of hardness can be modified based on customer needs, through variations in the drawing process.
  • Heat treated in a controlled atmosphere to attain malleability and consistent mechanical properties
  • It is possible to attain high degrees of hardness and high mechanical performance, depending on the material requested.

Finishes

  • Deburred by means of tumbling or grinding
  • Ground or with satin finish, depending on the length of the piece
  • Washed
  • Pickled
  • Special processes available on request

Type of packaging

Cardboard boxes on pallets

Technical Support.

We don't stop at co-designing, producing and guaranteeing high quality standards in the sector of stainless steel tubing. Our support continues after purchase as well, through our high-quality support service, dedicated to resolving and fulfilling customers’ questions and requests.

Request support