. This tool uses a hand-cranked chain drive to travel around the pipe’s circumference, guiding a cutting torch with steady precision. The demonstration typically follows these critical steps:
or similar heavy-duty stand, to prevent any movement during the cut.
For massive pipes, such as a section used for a propane tank, fabrication often starts with a portable machine like the Mathey Dearman Mini Jolly Go to product viewer dialog for this item. Pipe bevel demonstration on a large diameter pipe
even feature trackers that adjust for variations in the pipe's wall thickness to maintain a consistent edge.
For smaller tasks or on-site repairs, a skilled fabricator might use an angle grinder to hand-bevel the pipe, though this requires significantly more skill to ensure a uniform finish across the entire diameter. For massive pipes, such as a section used
After the machine pass, a "land"—a small flat edge—is often maintained to prevent burn-through during the root pass. Any remaining burrs are removed with a deburring tool to ensure a clean surface. Why Beveling Matters
Without this angled edge, a weld on a thick-walled pipe (anything over 6 mm) would remain shallow, creating a weak point that could fail under pressure. Modern methods like are now being used in shipbuilding and heavy construction to further improve efficiency and weld quality. After the machine pass, a "land"—a small flat