When using a heavy duty Pipe Wrench, maintain a gap between the back of the hook jaw and the pipe. This concentrates the pressure at the jaw teeth only and produces the maximum gripping force and aids ratcheting action.
If possible, always pull rather than push on the pipe wrench handle and maintain a proper stance with feet firm to hold balance.
Pipe Wrenches are designed to turn or hold pipe; never use a Pipe Wrench to bend, raise or lift a pipe.
Be sure to select a Pipe Wrench with sufficient capacity and leverage; never use a pipe extender or “cheater”.
Pipe cutter wheels that are nicked or otherwise damaged should be replaced.
If there is not enough space to swing the single wheel pipe cutter completely around pipe, then a three or four-wheel cutter should be used.
Be certain the cutting wheel is suitable to cut the type of pipe material. A thin wheel is suitable for cutting soft carbon steel pipe, copper tubing and aluminum alloy tubing.
Do not use a Pipe Wrench as a hammer, nor strike a Pipe Wrench with a hammer. Inspect Pipe Wrenches periodically for worn or unsafe parts and replace them.
Source: Hand Tools Institute