www.phcppros.com/articles/7719-sioux-chief-powerpex-tubing

Sioux Chief PowerPEX Tubing
June 22, 2018
The PowerPEX Type-B tubing is now approved for use with ASTM F1960 expansion fittings. All F1960 connections made to the T tube must be made with a self-rotating, power expansion tool. Using these tools assures the connection achieves the necessary tube ID and overall connection geometry, which allow the tube and fittings to be used together. The product is made in the U.S.A. and carries a 25-year warranty on material and workmanship.
Sioux Chief