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This document specifies a method for the determination of long term ring stiffness under constant deformation of buried non-pressure thermoplastics pipes having a circular cross-section.
All measurements are performed under constant deformation and constant temperature.
Note 1 The test method is in principle applicable for fittings but not yet included.
Note 2 This method is based on EN ISO 9967 and SS 3519:1986
Reģistrācijas numurs (WIID)
81138
Darbības sfēra
This document specifies a method for the determination of long term ring stiffness under constant deformation of buried non-pressure thermoplastics pipes having a circular cross-section.
All measurements are performed under constant deformation and constant temperature.
Note 1 The test method is in principle applicable for fittings but not yet included.
Note 2 This method is based on EN ISO 9967 and SS 3519:1986
