The following table gives the times for the heating phase, welding phase, and cooling phase of a butt fusion. The heating, welding, and cooling times are based on the size and SDR of the pipe. These values do not change from one welding machine to the next. However, each machine will have a different gauge pressure for adjustment and welding, based on the mechanical advantage of that machine. That value should be calculated using the machine’s operator manual.

fusion time

fusion time