Precision Tubes


Field of Application
Automotive: Shock absorber reserve and cylinder tubes,engine parts, suspensionbush, steering wheel, gear shift lever, window jack, exhaust pipes, door impact bars, drive and universal shaft, tubes for car&bus seats, luggage boothandles, chasis, buffer, axle, gas spring, bus body frames, etc.
Steel furniture: chairs, tables, bookshelves, trolleys, chase-lounge, wardrobes, frame for swings, perambulators
Home Appliance: vacum cleaner, vibration damper.
Design elements: greenhouse tubing, bicycle frames,elliptic and flat-oval hollow sections for special accessories.
Others: Heating, mechanical engineering, building and textile machine industries.

Production Standards
Welded Mechanical Tubing:
EN 10305-Part 3, DIN 2394, BS 6323 Part 5, NFA 49-645, UNI 7947, ASTM A 513
Drawn Welded Tubes:
EN 10305-Part 2, Dın 2393, BS 6323 Part 6, NFA 49-341,UNI 7946,
Drawn Seamless Tubes:
EN 10305-Part 1, DIN 2391

Material Quality
Uncoated Steel Strips:
E 155, E 420, E 195 acc. to EN 10027-1 St 37-2, St 44-2, St 52-3 acc. to DIN 17100 S 235 – S 275 – S355 acc. to EN 10025 St 12, St 13, St 14 acc. to DIN 1623 ERW 1/2/3/4/5 acc. to BS 6323 MT 1010, MT 1015, MT 1020 / acc. to ASTM A513
Sendzimir or Hot-Dip Galvanised Strips:
EN 10240 / DIN 17162, ASTM A 526/527
Special steel grades can be supplied upon request

Delivery Conditions
BKM : Welded and sized, no heat teatment (+CRI / EN 10305-3)
BK: Cold finished (Hard), as drawn
BKW: Cold finished (Soft), ligthly cold worked (+CR2 / EN 10305-3)
BKS: Cold finished and stress relieved
GBK: Annealed (+A / EN 10305-3)
NBK: Normalised (+N / EN 10305-3)

Finishing Operations
Heat Treatment, Drawn over mandrel and sink drawn, Swaging, Length Cutting, Pipe End Deburring, Phosphating, Protective Oil Coating, Weld repairing with zinc spraying for pipes made at galvanised strips

Tests Performed
The following tests are performed as per standard requirements or agreement with the customer;
Visual and Dimensionel Inspection
Destructive Test:
Tensile Test, Drift expanding Test, Flattening Test, Reverse Bending, Flanging Tests, Hydrostatic Testing, Erichsen Test
Non-Destructive Test:
Eddy Current
Chemical analysis of raw material

Surface Protection
Pipes can be delivered either with production emulsion / uncoated or ligthly oiled.

Marking
On bundles: Information Tags

Packing
In bundles fastened with steel straps. If required supported with wooden dunnages, bare or wrapped in pp woven fabric /
paper (VCI protection upon request).
Pipes can also be delivered in special packages, ie. in
wooden cases, on wooden skids.

Mill Certificates
Issued upon request acc. to EN 10204 2.2 / 3.1

PRECISION TUBES 1

outside
diameter (mm)
Wall Thichness (mm / inch) X DIN 2393 X DIN 2391
0.5 0.7 0.8 0.9 1.0 1.2 1.3 1.5 1.8 2.0 2.2 2.3 2.5 2.8 3.0 3.3 3.5 4.0 4.5 5.0 5.5 6.0 7.0 8.0 9.0 10.0 12.0
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PRECISION TUBES 2

outside
diameter (mm)
Wall Thichness (mm / inch) X DIN 2393 X DIN 2391
0.5 0.7 0.8 0.9 1.0 1.2 1.3 1.5 1.8 2.0 2.2 2.3 2.5 2.8 3.0 3.3 3.5 4.0 4.5 5.0 5.5 6.0 7.0 8.0 9.0 10.0 12.0
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