Rationale

Table 1 was copied over from ASTM F1282. The piping under the scope of ASTM F1282 is typically for use within water applications. In Table 1, there is a minimum wall thickness for the aluminum layer but there is also a tolerance which limits the maximum thickness of this same aluminum layer. This is a design restriction as a thicker layer would allow the designer of product to achieve higher pressures as needed for the refrigeration applications covered with the scope of this standard. My suggestion is to remove the tolerance column from the table. No other changes.