700 PSIProprietary Technologies.

Manufacturing changes have been implemented to ensure Mueller Industries produces the highest quality tube and fittings available to meet these high demand applications. Only quality DuraGrain™ copper is used in the production of ACR & dehydrated tube & fittings. This copper is a result of manufacturing process changes that have been dialed-in to provide optimum material properties with improved grain characteristics. Wall thickness and concentricity are being controlled using Mueller Industries' patented TrueCenter™ laser alignment process.

Streamline® Technologies


DuraGrain™ Technology

  • Raw copper is refined to a purity of 99.9%
  • Advanced metallurgy results in an optimum grain structure
  • Continuous testing for quality and consistency
  • Made in the U.S.A.
True Center

True Center™ Technology

  • Patented laser-guided system
  • Provides uniform wall thickness
  • Assures uniform grain consistency
  • Made in the U.S.A.

Today, Mueller Industries is the only company that manufacturers copper tube and fittings in the United States. Thus, our wrot copper fittings are produced from the same high-quality copper tube we sell worldwide.


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