The ISO 6259 series specifies a method of determining the tensile properties of thermoplastics pipes, including the following properties: stress at yield, and elongation at break.
ISO 6259-1:2015 is applicable to all types of thermoplastics pipe, regardless of their intended use.
ISO 6259-3:2015 specifies a method of determining the tensile properties of polyolefin (polyethylene, cross-linked polyethylene, polypropylene, and polybutene) pipes, and the following properties: the stress at yield and the elongation at break.
ISO 6259-1:2015
Thermoplastics pipes — Determination of tensile properties — Part 1: General test method
ISO 6259-2:1997
Thermoplastics pipes — Determination of tensile properties — Part 2: Pipes made of unplasticized poly(vinyl chloride) (PVC-U), chlorinated poly (vinyl chloride) (PVC-C) and high-impact poly (vinyl chloride) (PVC-HI)
ISO 6259-3:2015
Thermoplastics pipes — Determination of tensile properties — Part 3: Polyolefin pipes