DOM Tubing - Frequently Asked Questions (FAQs)

by AMC


Posted on September 13, 2024 at 12:40 PM

DOM Tubing

What Is DOM Tubing?

Drawn Over Mandrel Mechanical Tubing (DOM) is a type of cold-drawn tubing made from 1020/1026 electric resistance welded steel. Unlike traditional electric welded tubing, DOM tubing has all flash removed before the cold drawing process, which results in very tight outer diameter (OD) and inner diameter (ID) tolerances.

What are the uses of DOM tubing?

DOM tubing is used in high-pressure and heavy-load applications across industries like automotive, oil and gas, and aerospace. It’s ideal for creating strong machine parts, including motorcycle frames, mechanical bearings, and hydraulic cylinders.

What grade of steel is Dom tubing?

DOM tubing is typically made from 1020, 1026, or ST52.3 grade steel. It is a cold-drawn, electric resistance welded tube with all flash removed before drawing, which enhances its yield and tensile strengths.

What is the thickness of Dom tubing?

Outside Diameter Wall thickness Inside Diameter Type Weight, lbs/ft. Wgt/80ft.
1.25″ 0.120 1.010″ HREW/DOM 1.448 116
1.375″ 0.120 1.135″ HREW/DOM 1.608 128.6
1.5″ 0.095″ 1.310 HREW/DOM 1.426 114
1.5″ 0.120″ 1.260″ HREW/DOM 1.769 141.5
1.75″ 0.109″ (FIA) 1.532″ DOM 1.910 152.8
1.75″ 0.120″ 1.510″ HREW/DOM 2.089 167.1

What is 1026 DOM tubing?

1026 DOM tubing is a round tube made from 1026 mild steel, known for its high quality. The tube undergoes cold drawing over a mandrel during the finishing stages to achieve precise dimensions and enhanced mechanical properties.

Amardeep Steel offers A513 DOM tubing in many specifications and sizes. - Request for Quote Form.

What is the difference between DOM 1020 and 1026?

DOM tubing comes in various grades, including 1020 and 1026. The 1026 grade is generally used for larger diameters (over 2") and thicker walls (greater than .156"), while the 1020 grade is suitable for smaller diameters and thinner walls.

Why use DOM tubing?

DOM tubing is preferred for projects requiring high pressure or heavy workloads due to its superior strength and precision compared to traditional welds. It is commonly used in heavy-metal industries like automotive, oil and gas, and aerospace engineering to create essential and strong machine parts.

Is DOM tubing welded?

Yes, DOM tubing is made from electric resistance welded steel. However, all flash is removed before the tubing is cold drawn, which enhances its precision and strength.

How is DOM tubing made?

DOM tubing is produced by first slitting steel coils to the required tube size. An electric resistance welder then joins the edges together to form the tube. After welding, the tube is cold drawn to precise dimensions, tested for industry standards, and cut to the final shape and size.

How to measure DOM tubing?

DOM tubing is measured by its outside diameter (OD) and wall thickness. For example, a tube described as 1.75 inches x .120-wall DOM has an OD of 1.75 inches and a wall thickness of 0.120 inches.

What is the difference between ERW and DOM tubing?

ERW (Electric Resistance Welded) tubing is usually made from a 1010 alloy, while DOM (Drawn Over Mandrel) tubing is often made from a higher-grade 1026 alloy. DOM tubing is generally more expensive and considered a premium product due to its superior strength and precision compared to ERW tubing.

Is DOM steel strong?

Yes, DOM steel is strong. It has superior mechanical properties, including increased hardness and tensile strength, along with a reliable welding seam, making it suitable for demanding applications.

Is DOM tubing more expensive?

DOM tubing is generally more expensive than standard electric resistance welded (ERW) tubing but is typically less costly than cold drawn seamless tubing. It offers superior surface finish and precision, providing good formability and machinability while being a cost-effective choice compared to seamless options.

What is the ASTM spec for DOM tubing?

DOM (Drawn Over Mandrel) tubing is manufactured to ASTM Specification A513. This specification ensures that DOM tubing has tensile properties comparable to cold-drawn seamless steel tubing of the same steel analysis and nominal size.

Is DOM stronger than ERW?

DOM tubing is generally considered a premium product compared to ERW tubing and is typically more expensive. While DOM offers superior surface finish and precision, in terms of strength, both DOM and ERW tubing have nearly identical strength characteristics, so you might not see a significant difference in strength for applications like roll bars or roll cages.

What is the difference between A500 and A513 tubing?

A500 and A513 steel tubes have different applications and properties. A500 is designed for structural applications and is known for its strength and durability, making it suitable for heavy-duty assemblies. In contrast, A513, while sharing some similarities with A500, is less durable and not ideal for structural use.


Copper Nickel Pipe Sizes & Applications
Copper Nickel Pipe Sizes & Applications

Copper-nickel pipes are popular in many industries because they are strong, durable, and corrosion-resistant.

Copper-Nickel Alloys: A Comprehensive Guide
Copper-Nickel Alloys: A Comprehensive Guide

In this blog, we’ll explore copper-nickel alloys—an essential material that often flies under the radar.

What is Copper Nickel Pipe Used for
What is Copper Nickel Pipe Used for?

In this article, we'll take a closer look at copper-nickel pipes—an important yet often overlooked material.