Manufacturing > Process
 

The patented Permalok connection is applied to the production pipe by use of a Permalok ring or direct machining of the profile to the pipe.
 

1.Carbon steel plate is precisely cut utilizing computer controlled plasma or oxy-fuel equipment to ensure Permalok’s size specifications.

(click on each photo thumbnail to view enlarged image)

  
   
  2. Once cut to the exact size, plate is roll formed into a cylinder and tack welded to maintain its dimensions.  
   
  3. After rolling, the cylinder is moved to the first of the automatic double submerged arc welding (DSAW) stations. Size specifications are again verified prior to welding.  
   
  4. Cylinders are joined utilizing our jig and welded together (DSAW) to meet customer length requirements.  
   
  5. The cylinder is completed by welding (DSAW) the seams utilizing the digital readout weld controller, a unique Permalok design.  
   
  6. The diameter of the pipe is again tested for roundness and the patented Permalok profile is added by welding or machining onto the end of each pipe.    
   
  7. The finished pipe is coated to customer requirements and prepared for shipment.    
   
  8. We are strategically located so your product can be shipped economically by rail, truck, barge, or air, as needed.