FORMED · WELDED · SIZED
Precision welded tubes
Steel strip is formed, high-frequency welded and sized into tubes for automotive and mechanical components.


Applicable standard, grade, type, tolerances and delivery condition are defined for each order. Dimension ranges must be read with the listed size combinations.
TECHNICAL OVERVIEW
What defines this tube.
Use these points when selecting a tube or sending your drawing.
- Tube construction
- Longitudinal high-frequency welded tube
- Material examples
- Low-carbon grades; SAE 1010 and S550MC appear in documented supply records.
- Reference standards
- ASTM A513 / JIS G3445. State the required standard and product type in your enquiry.
- Delivery condition
- Specify the required as-welded or subsequent heat-treated condition.
- Length & end processing
- Long-length tube supply; cutting and chamfering for specified parts.
- Tolerances & inspection
- Specify OD, wall or ID tolerances, straightness and required tests.
Size matrices, tube routes, processing and inspection in a 12-page catalogue.
DIMENSIONAL SELECTION
Find a listed combination.
Choose the outside diameter and a listed wall thickness, then send the selected size to DOM.
Select a diameter to see the listed wall thicknesses.
Request Quote for This Size ↗| OD / Wall | 1.2 | 1.5 | 1.8 | 2 | 2.3 | 2.5 | 2.8 | 3.2 | 3.5 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.3 | ● | ● | ● | ● | ● | ● | ● | ● | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed |
| 19.1 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed |
| 21.7 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed |
| 25.4 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | Not listed | Not listed | Not listed | Not listed |
| 27.2 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | Not listed | Not listed |
| 28.6 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | Not listed | Not listed |
| 31 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 31.8 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 34 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 36 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 38.1 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 40 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 42.7 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
● Listed combination. Blank cells are not listed in this selection table.
This table covers thick-wall high-frequency welded tubes. It does not define the full size range of all DOM welded tubes.
MANUFACTURING ROUTE
From starting material to finished tube.
- 01
Strip slitting
- 02
Tube forming
- 03
High-frequency welding
- 04
Sizing and cutting
Subsequent heat treatment, finishing and inspection are selected for the specified product and delivery condition.
Explore manufacturing
SPECIFIED FOR YOUR COMPONENT
From the drawing to a manufacturing route.
Share the application, regular size and quantity. Include any end machining, surface condition and inspection requirements.
Discuss your requirementLET’S START WITH ONE SPECIFICATION
Have a drawing or a regular tube size?
Send your application and quantity. We can review the tube and processing requirements with you.
