Phone: 636.926.9000
  Fax: 636.926.9955

  Phone: 636.926.9000
  Fax: 636.926.9955

830 Westwood Industrial Park Dr  
Weldon Spring, MO 63304  
sales@tubularusa.com  

830 Westwood Industrial Park Dr  
Weldon Spring, MO 63304  
sales@tubularusa.com  

 DRAWN OVER MANDREL (DOM)

If your application requires closer tolerances on O.D., wall thickness and I.D. than are available in standard welded tubing, you may need Drawn Over Mandrel (DOM) tubing. DOM tubing also has higher mechanical properties than standard “as welded” tubing.

After normalizing, the tubing is cold drawn through a die and over a mandrel to reduce diameter and wall thickness to required dimensions. Special smooth I.D. surfaces are available for critical applications such as hydraulic cylinders, shock absorbers, or augers.

For these critical applications, we offer the following:

ASTM A513 Type 5 Electric Resistance Welded (ERW).

ASTM A512 Cold drawn butt-weld and cold drawn seamless steel tube.

 

If your application requires closer tolerances on O.D., wall thickness and I.D. than are available in standard welded tubing, you may need Drawn Over Mandrel (DOM) tubing. DOM tubing also has higher mechanical properties than standard “as welded” tubing.

After normalizing, the tubing is cold drawn through a die and over a mandrel to reduce diameter and wall thickness to required dimensions. Special smooth I.D. surfaces are available for critical applications such as hydraulic cylinders, shock absorbers, or augers.

For these critical applications, we offer the following:

ASTM A513 Type 5 Electric Resistance Welded (ERW).

ASTM A512 Cold drawn butt-weld and cold drawn seamless steel tube.