EN 10305-2 covers welded steel tube that is cold drawn after welding. The weld is made first and then drawn over a mandrel, which removes the flash and leaves concentric walls with a smooth bore. It gives precision close to seamless tube at a lower cost.
Grades
- E195: light mechanical parts
- E235 / E235C: the common grade for drawn welded tube
- E355: higher strength welded tube
Delivery conditions
- +C: cold drawn hard
- +LC: cold drawn soft
- +SR: stress relieved
- +A: annealed
- +N: normalized
Typical specifications
- Outside diameter and wall quoted to your drawing
- Weld seam normalized and drawn so it does not open in machining
- Wall concentricity checked on the agreed sample
Applications
- Shock absorber bodies
- Machined bushes and spacers
- Furniture and frame parts
- General mechanical tubing
Frequently asked questions
What is the difference between EN 10305-2 and EN 10305-1?
EN 10305-1 is seamless tube. EN 10305-2 starts as welded tube and is then cold drawn. The welded option costs less and is strong enough for most machined parts and shock absorber bodies.
Is EN 10305-2 the same as DOM tubing?
They are closely related processes. DOM is the American term for tube welded and then drawn over a mandrel, usually to ASTM A513 Type 5. EN 10305-2 is the European specification for the same family of product.
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