Joining of Plastic Pipes

Plastic pipe can be  joined one of the following methods

• Threading
• Solvent cement method
• Fusion

Threading pipe is not a viable option because it is expensive.

Joints made with solvent cement have proven more relaible, Though once hardened, cemented joints cannot be disassembled. They offer good resistance to abrasive chemical and high pressure commodities and are available in a large selection of fittings without the need of threads.

Heat fusion must be performed on some plastic compounds that are resistant to chemical solvents. pipe can be either be butt joined or socket joined. Heat fusion can be used with thinner wall thickness and are pressure resistant beyond the burst pressure of the pipe.

For fabrication of pipe, the important variables are chemical resistance, pressure limitations, temperature limitations, stress.