ISO 13967:2009
Thermoplastics fittings — Determination of ring stiffness
ISO 13967:2009 specifies a method of determining the ring stiffness of bends and branches made from thermoplastic material and for use with plastics pipes having a circular cross-section. The method can be used to determine the stiffness of bends, equal branches and unequal branches, provided the fitting allows a diametric deflection of at least 4 %.
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Scope
Terms and definitions
Symbols
Principle
Apparatus
Test pieces
Preparation
Number
Determination of dimensions
Inside diameter
Calculation length of bends
General
Bends with a radius u 1,5 times nominal size of the bend
Bends with a radius \( 1,5 times nomina
Calculation length of branches
Age
Conditioning
Test temperature
Procedure
Calculation of ring stiffness
Test report
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Related Information
Similar Standards
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AS/NZS 1254:2010
PVC-U pipes and fittings for stormwater and surface water applications
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AS/NZS 1254:2010 A1
PVC-U pipes and fittings for stormwater and surface water applications: Amendment 1 -
AS/NZS 1254:2010 A2
PVC-U pipes and fittings for stormwater and surface water applications: Amendment 2 -
AS/NZS 1254:2010 A3
PVC-U pipes and fittings for stormwater and surface water applications: Amendment 3
Scope
Terms and definitions
Symbols
Principle
Apparatus
Test pieces
Preparation
Number
Determination of dimensions
Inside diameter
Calculation length of bends
General
Bends with a radius u 1,5 times nominal size of the bend
Bends with a radius \( 1,5 times nomina
Calculation length of branches
Age
Conditioning
Test temperature
Procedure
Calculation of ring stiffness
Test report