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DOM tube and CEW tube are both precision tubes produced from ERW (Electric Resistance Welded) tubes through different cold working processes. They are widely used in applications requiring better dimensional control and surface quality compared with standard welded tube.
CEW tube refers to Cold Drawn Electric Welded tube, produced by cold drawing an ERW tube through a die to improve dimensional precision and mechanical performance.
DOM tube (Drawn Over Mandrel tube) describes a specific cold drawing method in which a mandrel is used during the drawing process, along with removal of internal and external weld flash beforehand. This method provides tighter control of the inside diameter, wall thickness, and overall tube consistency.
Although both products start from ERW tube, their drawing methods, applicable standards, and typical applications are different.
DOM Tube vs CEW Tube: Quick Comparison
| Item | DOM Tube | CEW Tube |
| Full Name | Drawn Over Mandrel Tube | Cold Drawn Electric Welded Tube |
| Starting Material | ERW welded tube | ERW welded tube |
| Drawing Method | Cold drawn with internal mandrel | Cold drawn through a die |
| Precision & Surface Finish | Excellent ID control and smooth internal surface | Good dimensional accuracy and improved surface finish |
| Material Grades | SAE 1020 / SAE 1026 carbon steel | E235 / E355 carbon steel |
| Common Standards | ASTM A513 Type 5 | EN 10305-2 |
| Typical Applications | Automotive components, hydraulic parts, precision mechanical components | Hydraulic cylinders, pneumatic systems, precision machinery |
Read full guide: DOM Tube vs CEW Tube: Key Differences
Article source: https://article-realm.com/article/Business/84145-CEW-Tube-vs-DOM-Tube-A-Complete-Comparison.html
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https://www.permanentsteel.com/Permanent Steel Manufacturing Co.,Ltd have years of experience in manufacturing of carbon steel pipe, stainless steel tube, hollow section, pipe fittings.(Fluid Pipe/Boiler Tube/Fire Pipe/Line Pipe/Structure Tube) Please refer to: https://www.permanentsteel.com
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