Amardeep Steel is a Drawn Mandrel (DOM) Tubing supplier. Dom Steel tubing is made from cold-drawn 1020/1026 steel and is welded using electric resistance, with all excess material removed before the drawing process. DOM steel tubing offers more precise outer and inner diameter measurements and the strongest weld strength than other types of tubing.
DOM steel tubing is a popular choice for many mechanical applications because it offers tightly controlled outer, inner, and wall thickness dimensions.
It also provides excellent concentricity and even wall thickness throughout. Additionally, DOM steel tubing has smooth surfaces inside and out, high strength, and is easy to machine, making it suitable for various uses.
The consistent quality of DOM steel tubing offers a big advantage. It has the same wall thickness and strength throughout, which you don’t get with other tubing. Also, it comes in many different sizes, so you can always count on getting a dependable product, no matter the tube's diameter. That’s why it’s often the top choice for special applications.
Amardeep Steel, one of the best DOM steel tubing suppliers, can provide you with high-quality, competitively-priced tubing for your next project.
DOM Steel Tubing Manufacturing Process
The process starts with cutting steel coils to the required width. The strip is cold-formed into a tube and welded using electric resistance. After testing the weld, the tube is cut to length and undergoes cold drawing. This step improves precision, surface finish, strength, and hardness by pulling the tube through dies and over mandrels, reducing its diameter and wall thickness. The result is a uniform product with tight control over outside and inside dimensions.
Our advanced cold drawing process uses a carbide die and mandrel to evenly reduce the inside diameter, outside diameter, and wall thickness of the tubing. After drawing, the dom stainless steel tubing goes through stress relief to improve its mechanical properties and dimensional accuracy. Rotary straightening ensures the tubes are extremely straight, and deburring makes them smooth and clean. dom stainless steel tubing is treated with a rust-preventive coating, cut to length, and squared off by removing about 1-2 inches from each end.
We thoroughly test all dom stainless steel tubing to ensure quality, using methods like Eddy Current testing to detect cracks, holes, or splits. We also check the dimensions, straightness, and surface quality to ensure there are no defects like rust or dirt. The total number of pieces and footage per bundle is verified. If needed, the dom stainless steel tubing is marked with details such as material type, mill, size, and heat number. We offer custom sizes and finishes to meet specific customer needs.
Benefits of Drawn Over Mandrel (DOM) Tubing
| Enhanced Strength | DOM tubing offers higher yield and tensile strengths, providing durability and performance while maintaining precise wall thickness and consistent outer and inner diameters. |
|---|---|
| Smooth Surface Finish | The manufacturing process results in a smooth, clean surface, free of oxides and scale, with the weld seam completely removed. |
| Versatility in Sizes | DOM tubing is available in a wide range of sizes and wall thicknesses, making it suitable for various applications. |
| Easy Machining | DOM tubing requires minimal additional processing, making it easy to machine and saving time and costs in downstream processes. |
Dom Steel Tubing Specification
| Material | DOM tubing is typically made from 1020, 1026, or ST52.3 steel. |
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| ASTM | DOM tubing meets ASTM A513 Type 5. |
| Size | DOM tubing is available in a range of sizes, from 3/16 in to 14 in OD, and wall thicknesses from .028 in to .625 in. |
| Length | DOM tubing is usually stocked in random lengths of 17 ft to 24 ft. |
| Custom sizes | Custom sizes are available upon request. |
| Weld line | The weld line on DOM tubing is nearly undetectable, giving it a seamless appearance. |
| Surface quality | The OD and ID surfaces of DOM tubing are smooth and dense, with no trace of the weld. |
| Machinability | DOM tubing is easy to machine, form, cut, and weld. |
Dom Tubing Chemical Composition
| Carbon | 0.22 - 0.28 |
|---|---|
| Manganese | 0.60 - 0.90 |
| Phosphorous Max | 0.015 |
| Sulfur Max | 0.005 |
| Silicon | 0.10 - 0.25 |
| Copper | 0.00 – 0.05 |
| Nickel Max | 0.05 |
| Chromium Max | 0.05 |
| Molybdenum Max | 0.05 |
Mechanical Properties of Dom Stainless Steel Tubing
| Tensile Strength Min | 85,000 psi |
|---|---|
| Yield Strength Min | 75,000 psi |
| Elongation Min | 15% |
| Hardness Min | 80 HRB |
DOM Steel Tubing Weights Chart
| 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 |
We Supply Globally
Cairo, Kanpur, Kuala Lumpur, Perth, Vung Tau, Jamshedpur, Milan, Chiyoda, Algiers, Bengaluru, London, Visakhapatnam, Ernakulam, Los Angeles, Bogota, Jeddah, Sharjah, Dallas, Courbevoie, Petaling Jaya, Thiruvananthapuram, Al Jubail, Gurgaon, Ankara, Seoul, Lahore, Toronto, Faridabad, Singapore, Chennai, Navi Mumbai, Haryana, Sydney, Colombo, Mexico City, Ulsan, Secunderabad, Busan, Lagos, Pune, Jaipur, Muscat, Kolkata, Geoje-si, Dammam, Aberdeen, Thane, Bangkok, Abu Dhabi, Bhopal, Kuwait City, La Victoria, Noida, Port-of-Spain, Moscow, Hyderabad, Nashik, Granada, Karachi, Indore, Manama, Atyrau, Tehran, Houston, Coimbatore, Dubai, Calgary, Montreal, Rio de Janeiro, Riyadh, Gimhae-si, Ludhiana, Santiago, Melbourne, Ahmedabad, New York, Ahvaz, New Delhi, Jakarta, Ho Chi Minh City, Al Khobar, Doha, Edmonton, Surat, Hong Kong, Hanoi, Howrah, Ranchi, Baroda, Brisbane, Chandigarh, Istanbul, Nagpur, Rajkot, Caracas, Vadodara, Madrid, Pimpri-Chinchwad, Mumbai
We Explore Worldwide
Norway, Nigeria, Namibia, Bangladesh, Israel, Gambia, Morocco, United Arab Emirates, Hungary, Turkey, Lithuania, Indonesia, Bhutan, Yemen, Trinidad & Tobago, Tunisia, Lebanon, Iran, Russia, Czech Republic, Taiwan, Japan, Australia, Nepal, Zimbabwe, Canada, Mexico, Qatar, South Korea, Belgium, Argentina, Ecuador, France, Finland, United Kingdom, Kuwait, Peru, Germany, Colombia, Estonia, Thailand, Singapore, Mongolia, Austria, Poland, Malaysia, China, Philippines, India, Hong Kong, Chile, Iran, Macau, Bolivia, Romania, Ghana, Poland, Vietnam, South Africa, Mexico, Sri Lanka, New Zealand, Kazakhstan, Bahrain, Ukraine, United States, Egypt, Oman, Afghanistan, Libya, Chile, Ireland, Serbia, Angola, Croatia, Jordan, Spain, Brazil, Sweden, Tibet, Saudi Arabia, Bulgaria, Azerbaijan, Italy, Costa Rica, Switzerland, Algeria, Portugal, Nigeria, Gabon, Puerto Rico, Slovakia, Greece, Pakistan, Iraq, Kenya, Venezuela, Belarus, Denmark.
DOM Tubing FAQs
1. What does DOM mean for tubing?
DOM, or "Drawn Over Mandrel," is a process that produces high-quality steel tubes using 1020/1026 electric resistance welding, resulting in strong and precise tubing.
2. Is DOM tubing hot-rolled or cold-rolled?
DOM (Drawn Over Mandrel) tubing is cold rolled. It is made from 1020/1026 electric resistance welded tubes, with the flash removed before the cold drawing process. This results in very tight OD and ID tolerances compared to standard welded tubing.
3. Does the DOM tubing have a seam?
Yes, the DOM tubing does have a seam. Although it is sometimes mistaken for seamless tubing, DOM offers strong weld strength due to the manufacturing process, which involves welding before the tubing is cold drawn.
4. How to measure DOM tubing?
To measure DOM tubing, you need to determine its outside diameter (OD) and wall thickness. For example, a 1.75-inch x .120-wall DOM tube has an OD of 1.75 inches and a wall thickness of 0.120 inches (approximately 1/8 inch).
5. Is the DOM tubing heat-treated?
Yes, DOM tubing is heat-treated. The material undergoes normalizing heat treatment after being formed from flat sheets and welded, which prepares it for the cold drawing process and improves its suitability for cold working.
