AS NZS 1477:2017 PVC pipes and fttings for pressure applications
4.3.1 Effective length
The effective length of pipe shall be 6 ±0.05, ± 0 m at 20°C or as agreed upon between purchaser and supplier [see Figure 4.1(a)].
4.3.2 Spigoted and socketed pipe for elastomeric ring jointing
Spigoted and socketed pipes for elastomeric ring jointing shall be marked with a witness mark such that, when the spigot is inserted into a matching pipe socket with the witness mark on line with the mouth of the socket, the jointing requirements of Section 7 are met
[see Figure 4.1(b)].
The effective length shall be determined by subtracting the insertion length from the overall length, measured in accordance with AS/NZS 1462.1, and then, if necessary, making an adjustment for temperature.
NOTE: The coefficient of thermal expansion of PVC pipe may be taken for reference as 7 ± 10 ±5 per kelvin (see AS/NZS 2032).
4.3.3 Spigoted and socketed pipe for solvent cement jointing
The effective length of spigoted and socketed pipe for solvent cement jointing shall be determined by subtracting the socket length from the overall length both measured in accordance with AS/NZS 1462.1 and then, if necessary, making an adjustment for temperature [see Figure 4.1(c)].
4.3.4 Plain-ended pipe
For plain-ended pipes the overall length, measured in accordance with AS/NZS 1462.1,shall be the effective length.
4.4 PIPE SPIGOT ENDS
Pipe spigot ends, measured in accordance with AS/NZS 1462.1, shall be normal to the main axis of the pipe spigot within the tolerances for end squareness given in Table 4.1.
4.5.1 Tolerances
Sockets measured in accordance with AS/NZS 1462.1 shall be normal to the main axis of the pipe socket within the tolerances for end squareness given in Table 4.1. Sockets formed on the ends of pipe shall be parallel within ± 2° to the axis of the pipe. Sockets shall be concentric with the pipe to within 2.5% of pipe outside diameter for pipes up to and including nominal size DN 150, and 1.0% for larger pipes.
4.5.2 Series 1 pipe for solvent cement jointing
Sockets formed on Series 1 pipes for solvent cement jointing shall conform to the dimensions given in Table 4.3. Socket wall thickness shall be not less than 90% of the specified pipe minimum wall thickness. The jointing surface of pipe sockets for solvent cement jointing shall taper uniformly from the mouth to the root of the socket.
NOTE: Pipes and fittings manufactured to this Standard, suitable for solvent cement jointing, are intended for use with solvent cements and priming fluids complying with AS/NZS 3879, Pressure (Type P).