scope:

This standard describes crosslinked polyethylene (PEX) pressure tubing made from material having a standard PEX material designation code of PEX 1306, or higher, according to ASTM* F876 and intended for use as underground potable water, reclaimed water, and wastewater service lines in sizes . in. (13 mm) through 3 in. (76 mm) that conform to a standard dimension ratio of SDR9. Tubing may incorporate an optional polymeric outer layer.

Included in this standard are criteria for classifying PEX plastic tubing materials, and a system of nomenclature, requirements, and test methods for materials and tubing. Methods of marking are given. Design, installation, and application considerations are discussed in the foreword of this standard. * ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428.

Purpose

The purpose of this standard is to provide the requirements for materials, design, testing and inspection, and shipping of PEX tubing for use as service lines in the construction of underground water distribution systems