Drawn Over Mandrel Tubing vs Cold Drawn Seamless Tubing

 Cold Drawn Seamless Tubing(CDS) and Drawn Over Mandrel Tubing (DOM) are the most two kinds steel tubes in many kinds of industry applications.

Drawn Over Mandrel Tubing (DOM)is a cold drawn ST52/1026 electric resistance welded tube with all of the flash removed prior to cold drawing. In comparison to traditional electric welded tubing, DOM tubing is produced to extremely tight OD and ID tolerances. This type of tubing is also known to have the highest weld strength possible. DOM’s tight tolerances, concentricity, and superior surface quality on the OD/ID surfaces make this type of tubing very cost-effective. The tubing’s close tolerances allow for this mechanical tubing to be used with little to no downstream processing.

Cold Drawn Seamless Tubing (CDS) is a cold drawn ST52/1026/4140 steel tube. Produced from hot rolled  material. The cold drawing process increases the material's physical properties and offers tighter tolerances compared to hot-rolled products. CDS is produced from hot solid round billets that are pierced to create a tube. The tubes are subsequently rolled which reduces their diameters and elongates them. The tubes are then slowly cooled before being passed through a die and over a mandrel plug to produce accurate dimensions.

Cold drawn seamless tubing manufacturing process enables this type of tubing to achieve higher physical properties, size accuracy, and enhanced appearance. Although, the tolerances on CDS are not typically as tight as DOM, this type of tubing can be produced with a much thicker wall than its counterpart DOM. The superior strength and hardness of this tubing make for a better-looking component after machining is done to the part.

Anbao Hydraulic as a professional manufacturer of hydraulic tubing, we usually use cold drawn seamless tube to produce cylinder barrel, Seamless tube with high pressure resistance;which means our honed tubing can work under higher pressure, thus our honed pipes are more reliable for hydraulic cylinder applications.

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