Cold Finished
Tube (advantages)
- Flat surface status, the result of the rolling
operation
- Few calamine deposits in the surface and better suited to
painting.
- Regularity of thickness and tolerances of under 5mm
- Tighter tolerances on external dimensions of over 100, on the
concavity and convexity of faces and on the straightness of
rectangular and square tubes
- Manufacturing mode adapted to high yield point requirements.
- Conservation of fine granular structure obtained in the rolling
operation
- Can satisfy high strength requirements (HLE) in excess of the
limits set in the product standard.
- Wide range available
- Economic attractive
Cold Finished Tube and Heat Treated
(advantages)
- Uniform thickness
- Abscence of residual stress
- Guarantees better properties for drawing
Hot Finished Tube (advantages)
- Welded area (ZAT) certified by heat treatment
- Abscence of residual stress
- Guarantees better properties for drawing
- Higher thickness/diameter ratio
- Possibility of smaller angle radio
What is the CE Marking
A valid CE marking affixed to a product indicates that it complies with the relevant European 'New Approach' product safety Directives.
PRODUCTION STANDARDS AND QUALITY CERTIFICATES
North American Standards
Cold-finished structural tube is made according to the American
standard ASTM A-500 HSLA 50-80 min yield HS-83K and Canadian
standard G40 21 Class C. Hot-finished structural tubes according
to the Canadian standard G 40 21 Class H. Galvanized product to ASTM A!@# Standards or as specified by the customer.
European Standards
The cold-formed structural tubes without subsequent heat
treatment manufactured are made in accordance with the EN 10219
standards.
For motives of service and end use of product, the cold
manufacture of structural tube is based on two types and
qualities of steel: S275 J0H and S 355 J2H.
Hot dip galvanised tube is made in accordance with the EN 10240
standard and is shot blasted in accordance with the EN 10238
standard, grade SA 2.5 with or without primer.
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