ring stiffness_ ISO 9969_ASTM D2412_ ISO 13967
100190

ISO 9969 Pipe Ring Stiffness Testing Machine

 ISO 9969:2016 : Thermoplastics pipes — Determination of ring stiffness
Ring stiffness, ring flexibility and initial specific ring stiffness

ISO 9969, ASTM D2412, EN 1228, ISO 13968, ISO 13967

ISO 9969:2016 specifies a test method for determining the ring stiffness of thermoplastics pipes having a circular cross section.

 

Initial specific ring stiffness
ISO 7685
DIN EN 1228
ASTM D 2412
DIN 53769-3

ISO 9969

Resistance to deflection
ISO 10466
DIN EN 1226
ASTM D 2412

Resistance to creep
DIN 16868-2
DVGW 24-hour
DVGW 100-hour

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