What is the standard for Dom tubing?

Standards for DOM (Drawn Over Mandrel) Tubing

1. ASTM A513, Type 5 (A513-5)

• DOM tubing is commonly manufactured according to ASTM A513, Type 5, which is the standard specification for electric-resistance-welded (ERW) carbon and alloy steel mechanical tubing 

• Manufacturers such as Totten Tubes specifically offer DOM that meets all ASTM A513‑5 standards for excellent surface quality and tight dimensional tolerances 

• Leading DOM suppliers note that their DOM tubing meets ASTM A513 Type 5 and is made from steels like 1020, 1026, or ST52.3

2. Material Detail

• The most common base materials for DOM tubing are 1020 and 1026 carbon steels. These are ERW tubes that are cold-drawn over a mandrel to refine the internal and external finish and achieve accurate ID (inside diameter) and OD (outside diameter) tolerances 

3. European Standards (e.g. EN 10305-2)

• In some regions, European standards like EN 10305‑2 may apply to cold-drawn seamless tubes that function similarly to DOM tubing 

4. Dimensional Definitions

• DOM tubing is defined by three key dimensions: ID, OD, and Wall Thickness. When ordering, only two of these three are typically specified, with the third calculated. Suppliers like Alro Steel commonly purchase DOM tubing by specifying both OD and ID 

Quick Summary

Final Thoughts

In most contexts—especially in North America—the recognized standard for DOM tubing is ASTM A513-5, using 1020 or 1026 carbon steel ERW tubes that are cold-drawn for optimal dimensional control and surface quality.

If you're dealing with European specifications or need seamless alternatives, consider EN 10305-2, although that typically pertains to cold-drawn seamless steels rather than ERW-produced DOM.