The interior of tube or pipe (11 ga. minimum) has a hammered finish
applied to it. The finish is extremely irregular without the sharpness
encountered in sandblasting. Testing has proven that the surface
hardness increased as much as 10% due to the hammered stress.
Conveying lines which utilize Aluminum alloys will work harden
therefore increasing the life of the textured surface. When originally
tested the hammered finish scored so low that the tests were
repeated several times to be certain that the generation of fines,
fluff and streamers were consistent. *Aluminum or Stainless Steel
Tube & Pipe are available for lining.
*Copy of report available upon request

See PDF file for more information.