Information on the most widely used ASTM standards within the materials testing industry
ISO 13844 Plastics piping systems — Elastomeric-sealing-ring-type socket joints for use with plastic pressure pipes — Test method for leaktightness under negative pressure, angular deflection and deformation.
ISO 13844 specifies a method for testing the leak tightness under negative pressure, angular deflection, and deformation of assembled joints between elastomeric-sealing-ring-type sockets made of plastic or metal and plastic pressure pipes.
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Joints Leak Tightness Tester is a customized product, which can be customized according to the user's testing requirements for the suitability of the elastic sealing ring joint connection in the drainage pipe system (the test project user can optional), and can be upgraded to a full-function, full-model product. Equipment for the mechanical connection seal part of the pipeline pipe fittings is very necessary, the test form is mainly by the medium pressure water pressure (several times the nominal pressure), low pressure water pressure (50KPa-5KPa or less), air pressure, low air pressure, negative pressure (-30KPa) in the form of test pipeline or pipeline connection part in the form of system sealing performance under the action of horizontal, deflection inclination, bending and other external forces.
| Main ISO 13844 pipe joins test and test conditions: | |
| medium pressure water pressure: | Several times the nominal pressure |
| low pressure water pressure | 50KPa-5KPa or less |
| air pressure (negative) | 0~(-0.08)MPa |
| low air pressure | |
| negative pressure | -30KPa |
Widely used, the pipeline system for the purpose of: polyethylene PE, polypropylene PP-R, aluminum-plastic pipe, hard PVC water supply and drainage, all kinds of mining pipes, FRP pipes, rubber composite hoses, communication pipes and various buried structure wall pipes.

Related Standard
ISO 13259 Leak tightness test Thermoplastics piping for underground non-pressure stipulated determining method of the leak tightness of elastomeric sealing ring type joints buried thermoplastics piping. This standard specifies three basic test pressures for determining the leaktightness of elastomeric sealing ring type joints for buried thermoplastics non-pressure piping systems.
ISO 13259 Leakage tightness test machine.
Unless otherwise specified in the referring standard, the methods pressures used are the following:
- p1: internal negative air pressure (partial vacuum);
- p2: a low internal hydrostatic pressure;
- p3: a higher internal hydrostatic pressure.
ISO 13254 specifies a hydrostatic pressure test method for evaluating the watertightness of two categories of non-pressure thermoplastics components: (1) multi-piece fabricated products (e.g., custom-molded fittings) and (2) joints in thermoplastics piping systems.The test validates sealing performance under simulated service conditions for drainage, sewerage, and stormwater systems.
The standard aims to ensure consistent assessment of leak resistance, critical for applications like drainage, irrigation, and underground conduits where fluid ingress could compromise system integrity.
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