| ASTM |
| ASTM D2412 | Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading |
| ASTM D638 | Standard Test Method for Tensile Properties of Plastics |
| ISO |
| ISO 13968 | Plastics piping and ducting systems - Thermoplastics pipes - Determination of ring flexibility |
| ISO 9967 | Thermoplastics pipes - Determination of creep ratio |
| ISO 9969 | Thermoplastics pipes - Determination of ring stiffness |