ISO/TC 138/SC 5
| Project No. | ISO 15853:1999 |
|---|---|
| Title | <p>This International Standard specifies a general procedure for the production, by injection-moulding, of tubular test</p> <p>pieces for the determination of the resistance to internal pressure. It also specifies the design of the mould to be</p> <p>used.</p> <p>By using the same material as for injection-moulded piping components, such as fittings, these test pieces make it</p> <p>possible to determine the time-related behaviour of the fitting material under hydrostatic pressure and under the</p> <p>very same conditions as specified for extruded pipes. It is possible to test the resistance to internal pressure of the</p> <p>injection-moulded tubular test pieces in accordance with ISO 1167, to extrapolate the results in accordance with a</p> <p>method such as that specified in ISO 9080 in order to determine the MRS, and to classify the material in</p> <p>accordance with ISO 12162.</p> <p>The tubular test pieces also make it possible to verify individual points on previously established stress/time</p> <p>regression curves as a minimum material test requirement.</p> <p>The basis established by this International Standard allows test pieces to be prepared reproducibly.</p> <p>Nevertheless, the method given is a general one, and the injection-moulding parameters have to be specified for</p> <p>every material used.</p> <p>NOTE If the compound used for the injection-moulding of piping components can also be extruded, then its time-related</p> <p>behaviour may be investigated using either injection-moulded or extruded tubular test pieces.</p> |
| Registration number (WIID) | 29282 |
| Scope | <p>This International Standard specifies a general procedure for the production, by injection-moulding, of tubular test</p> <p>pieces for the determination of the resistance to internal pressure. It also specifies the design of the mould to be</p> <p>used.</p> <p>By using the same material as for injection-moulded piping components, such as fittings, these test pieces make it</p> <p>possible to determine the time-related behaviour of the fitting material under hydrostatic pressure and under the</p> <p>very same conditions as specified for extruded pipes. It is possible to test the resistance to internal pressure of the</p> <p>injection-moulded tubular test pieces in accordance with ISO 1167, to extrapolate the results in accordance with a</p> <p>method such as that specified in ISO 9080 in order to determine the MRS, and to classify the material in</p> <p>accordance with ISO 12162.</p> <p>The tubular test pieces also make it possible to verify individual points on previously established stress/time</p> <p>regression curves as a minimum material test requirement.</p> <p>The basis established by this International Standard allows test pieces to be prepared reproducibly.</p> <p>Nevertheless, the method given is a general one, and the injection-moulding parameters have to be specified for</p> <p>every material used.</p> <p>NOTE If the compound used for the injection-moulding of piping components can also be extruded, then its time-related</p> <p>behaviour may be investigated using either injection-moulded or extruded tubular test pieces.</p> |
| Status | Standarts spēkā |
| ICS group | 23.040.01 83.080.20 |