heat-fusion joint

heat-fusion joint

A joint in which heat is used to melt the end of a plastic pipe and the socket of a plastic fitting into which the pipe is inserted. When cooled, a solid joint is formed; can be used only with plain-end plastic pipe and with fittings manufactured specifically for this purpose.
References in periodicals archive ?
The heat-fusion joint between the pipe and the fitting is a key element of the assembly.
It could also account for improperly fused heat-fusion joints.
It is important to note the results are dependent on the operator making good quality heat-fusion joints.