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Preformed Pipe Ends

1/2" to 1" pipes are usually supplied with both ends square cut. Larger sizes within the National Plastic range are supplied with a plain socket for solvent welding or with a rubber ring socket for push fit jointing. The internal dimensions of both types of socketed joints are to BS 4346.
Rubber rings supplied with National Plastic pipes are the FORSHEDA F578 made in Europe from SBR or EPDM best quality rubber which conforms to the requirements of BS 2494. The F578 seal is a combined lip and compression seal which is locked inside the pipe socket. A retaining ring holds the sealing ring in position during transport and assembly. The front lip prevents dirt on the spigot from entering the joint.

Pipe Length

The standard overall pipe length is 6 meters. For plain-ended pipes, the effective length corresponds to the overall length. For pipes with an integrally formed rubber ring joint or solvent cement joint, the effective length excludes the length of the socket. When pipes are shipped in 20ft or 40ft containers, an overall length of 5.8 meters is more economical to transport.

Fabricated Fittings

National Plastic fabricates a full range of fittings formed from uPVC pipe conforming to BS 3505 : 1986. These include long radius bends, reducers, couplers, etc. and come in any combination of end connections such as socket joint, rubber seal, stub collar, backing flange, plain end and comforted spigot.

Fittings & Solvent Cement

A very wide range of compatible solvent cement uPVC fittings manufactured to the requirements of BS 4346 : Part 1 : 1969 are available ex stock. Fitco solvent cement can also be supplied from stock.

Features of NP Imperial Pipes

  • Fully compliant with the BS 3505 standard.
  • High strength-to-weight ratio.
  • Resistant to corrosion and to a wide range of chemicals.
  • High impact resistance.
  • ISO 9002 Quality assured and tested to the strict specifications of the standard for dimensions, impact resistance, burst pressure etc.
  • Smooth internal bore for reduced friction losses.
  • Compatible with the full range of BS 4346 uPVC pressure fittings.
  • Long service life under a wide range of conditions.
  • Will not support combustion.





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Pressure Pipe