Products/Cold-drawn welded tubes

WELDED · COLD DRAWN

Cold-drawn welded tubes

Welded tube is subsequently cold drawn for dimensional and surface requirements. This process is also known as drawn-over-mandrel, or DOM, tubing.

Enquire about this tube Download Catalogue · PDF

SELECTIONCold-drawn welded range

OUTSIDE DIAMETER12–78 mm

WALL THICKNESS0.8–8.0 mm

REFERENCE STANDARDSEN 10305-2 / GB/T 31315

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: Welded mother tube followed by cold drawing
Material examples: Low-carbon steel grades; E355 appears in supplied steering-system tubing.
Reference standards: EN 10305-2 / GB/T 31315. State the required grade and delivery condition.
Delivery condition: Specify the required cold-worked or heat-treated condition with your drawing.
Length & end processing: Cut-to-length tubing, chamfering and specified Swiss-type machining.
Tolerances & inspection: Define OD / ID / wall, concentricity, surface and inspection requirements.

Take the product details with you.

Size matrices, tube routes, processing and inspection in a 12-page catalogue.

Download Catalogue · PDF Other languages ↗

REGULAR PRODUCTION EXAMPLES

Materials linked to the application.

Explore gas-lift and roller tube programmes with their listed steel grades and sizes.

SAE1008 · SPHT3

Gas-lift & gas-spring tubes

9 regular combinations, including SAE1008 18 × 1 and SPHT3 28.05 × 2.5 mm.

View all regular sizes ↗Q235B

Roller tubes

32 / 38 mm OD with 1.8 / 1.9 mm wall thickness.

View the four combinations ↗

These application-specific production examples supplement the general size-combination table below.

DIMENSIONAL SELECTION

Find a listed combination.

Choose the outside diameter and a listed wall thickness, then send the selected size to DOM.

Choose outside diameter (mm)

Select a diameter to see the listed wall thicknesses.

Listed wall thickness (mm)

Request Quote for This Size ↗

Listed production combinations · dimensions in mm
OD / Wall	0.8	1	1.2	1.4	1.6	1.8	2	2.2	2.5	2.85	3	3.5	3.8	4	4.3	4.8	5.5	6	6.5	7	7.5	8
12	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
14	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
15	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
17.3	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
20	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	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
24	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed
25	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed
27.2	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed
28	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed
30	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed
31.8	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
33	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
35	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
38	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
40	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
42.7	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
45	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
46	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
48	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
50	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
51	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
54	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
56	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
60	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
64	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
65	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
67	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
70	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
75	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed
78	Not listed	Not listed	●	●	●	●	●	●	●	●	●	●	●	●	●	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed	Not listed

● Listed combination. Blank cells are not listed in this selection table.

The size selection below applies to cold-drawn welded tubes. Seamless tubes are a separate product line.

MANUFACTURING ROUTE

From starting material to finished tube.

01
Welded mother tube
02
Heat and surface preparation
03
Cold drawing
04
Straightening and inspection

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 requirement

LET’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.

Send a Drawing / Enquiry

Cold-drawn welded tubes

What defines this tube.

Materials linked to the application.

Gas-lift & gas-spring tubes

Roller tubes

Find a listed combination.

From starting material to finished tube.

Welded mother tube

Heat and surface preparation

Cold drawing

Straightening and inspection

From the drawing to a manufacturing route.

Have a drawing or a regular tube size?