DOM

DOM (Drawn Over Mandrel) Tubing

Our DOM tubing is produced from electric resistance welded (ERW) carbon and alloy steel with all internal flash removed. The semi-finished tube undergoes a secondary cold-drawing process through a die and over a mandrel simultaneously. This precision processing achieves exact finished dimensions, superior surface finishes, and the highest possible weld strength.

To meet specific project demands, our DOM tubing can be thermally treated after drawing to refine mechanical properties, improve machinability, or increase toughness.

Standard Specifications & Grades

We stock DOM tubing compliant with the following industry standards:

ASTM A513 Type 5: (The standard for high-precision mechanical tubing)

Available Chemistries:

1020 / 1026: Standard carbon grades for general machining and structural use.
ST52.3: High-strength low-alloy steel for hydraulic and high-stress applications.

Size Capabilities:

Diameter: 0.375″ to 12″ OD
Wall Thickness: 0.035″ to 0.625″

Why Source from PIT Steel?

Domestic Inventory

Extensive stock of steel melted and manufactured in the USA.

Hard-to-Find Specs

Specialized inventory in high-yield API 5L X52 & X65 grades.

Mill Relationships

Direct supply agreements with Tier 1 global mills.

Strategic Stocking

Customized inventory programs built to support your specific project timelines.

Value-Added Services & Finishes

We provide ready-to-use DOM tubing through our specialized processing center:

Value-Added Services:

Honing & Boring: For precision internal diameter requirements.
Machining & Chamfering: End-prep and component fabrication.
Laser & Saw Cutting: High-tolerance length cutting.
Forming: Custom bending and shape manipulation.

Applied Industries

DOM tubing is the preferred choice for high-precision mechanical parts in:

Fluid Power: Hydraulic and pneumatic cylinders.
Automotive & Machinery: Bushings, bearings, and high-stress structural components.
Material Handling: Rollers and conveyor systems.
Agriculture & Construction: Farm implements and heavy equipment frames.