Muoviteollisuus

 

This document specifies a method for determining the longitudinal tensile properties of pipe or pipe/pipe or pipe/fitting assemblies using hydraulic pressure. The method accommodates water-in-water or liquid-in-liquid tests or their combinations. The document is applicable to pipes and their assemblies with fused or bonded joints with the same or different MRS or design SDR. The method provides load-displacement curves, from which the following properties are determined., — the longitudinal strengths (sLY , sLU, sLB) — the percent elongation (?LB) — the energy to failure (UT)

 

This document specifies methods for testing the resistance to sustained longitudinal tensile loading (longitudinal stress-rupture) of uniaxial plastic pipe/pipe or pipe/fitting or fitting/fitting assemblies using hydrostatic pressure at a given temperature. This document is applicable to pipe assemblies with electrofusion or butt fusion joints. The methods accommodate water-in-water, water-in-air, and liquid-in-liquid tests. Method A uses no external hoop expansion restraint (specifically designed test piece). Method B uses external hoop expansion restraint (metal end caps or circumferential (ring) clamps). Note 1 The longitudinal (axial) tensile loading by hydrostatic internal pressure is achieved by using means to create axial stress as the maximum principal stress over the hoop stress in the assemblies. The external hoop expansion restraint or specific test piece design is used for this purpose[1,2].

 

ISO 9405:2015 describes the procedures for assessing the overall change in appearance of textile floor coverings caused by Vettermann drum and hexapod tumbler testers according to ISO 10361 and ISO 4918.

 

This document describes the procedures for assessing the overall change in appearance of textile floor coverings caused by the Vettermann drum according to ISO 23106 and EN 18320, Hexapod tumbler test according to ISO 23122 and Castor chair test according to ISO 4918.

 

This document describes procedures that use the mechanical action of a Vettermann drum tester using polyurethane studs to produce changes in appearance (surface structure and colour) to all types of textile floor coverings. It does not include pilling or colour changes due to other actions. Changes produced by this drum tester are assessed in accordance with the applicable assessment standard.

 

This document specifies the general terms and definitions relevant to the utilization of thermoplastics materials in a circular economy in pipes, fittings and ancillaries for both pressure and non-pressure piping systems. This document is intended to be used by specification writers in conjunction with CEN/TS 14541-2 [7] when preparing normative documents under the scope of CEN/TC 155.

 

The method of classification given in this part of ISO 4433 serves to determine the chemical resistance of PVDF and ECTFE pipes, fittings and valve components designed for the conveyance of fluids in the absence of pressure and stress (e.g. due to earth loads or traffic loads, dynamic or internal stresses). To determine the chemical resistance, the method uses the change in mass and the changes in tensile properties which result from the storage of test pieces in chemicals. The storage test is carried out in accordance with ISO/DIS 4433-1. This part of ISO 4433 is also applicable to PVDF and ECTFE sheets as appropriate

 

The classification method in this part of ISO 4433 is used to determine the chemical resistance of pipes, fittings and valve components made of PVC-U, PVC-HI, PVC-M, PVC-A, PVC-O and PVC-C designed for the transport of chemicals in the absence of pressure and stresses, such as earth loads and dynamic internal stresses. To determine chemical resistance, the method uses the change in mass and changes in tensile properties that result from storing test pieces, taken from such pipes, fittings and valve components, in chemicals. The test is performed in accordance with ISO 4433-1. This part of ISO 4433 is also applicable to PVC-U, PVC-HI, PVC-M, PVC-A, PVC-O and PVC-C sheets, as appropriate.

 

The method of classification given in this part of ISO 4433 serves to determine the chemical resistance of polyolefin pipes, fittings and valve components designed for the conveyance of chemicals in the absence of pressure and stress such as earth loads, dynamic internal stresses. To determine the chemical resistance, the method uses the change in mass and the changes in tensile properties which result from the storage of test pieces, taken from such pipes, fittings and valve components, in chemicals. The test is carried out in accordance with ISO/DIS 4433-1. This part of ISO 4433 is also applicable to polyolefin sheets as appropriate.

 

This part of ISO 4433 specifies a method for carrying out a preliminary evaluation of the behaviour of thermoplastics pipes, fittings, sheets and valve components in relation to the chemicals transported. This method provides information on the suitability of pipes, fittings, sheets and valve components for transporting chemicals in the absence of pressure or stresses such as earth loads, dynamic stresses and internal stresses. NOTE An additional indication about test method to evaluate the compatibility of plastic materials against liquids, gases, their mixtures or multiphase fluids is reported in ISO 23936-1[11]. A full procedure for carrying out the test is also reported in ISO 175, which is devoted to plastics in general, and not specifically to thermoplastics pipes, fittings, sheets and valve components. Fatigue resistance, permeability, resistance to rapid gas decompression are not taken into account in this document.