Frequently Asked Questions

A thermic lance, often referred to as a “burning bar”, is a steel pipe or tube that is filled with smaller steel rods or wire. The steel rods are held inside the pipe by hydraulic crimps or bends in the pipe. When ignited and supplied with high-pressure oxygen, the combination of heat, steel and oxygen creates extreme heat as a result of an exothermic reaction that will melt and cut a variety of materials. In comparison, a lance pipe is a standard hollow pipe without any rods or wires. However, they are both supplied with a source of oxygen and ignited for cutting purposes.

The temperature of the burning tip of a thermic lance will exceed 6,600⁰F (3,650⁰C). Only the very tip will see this temperature. The thermic lance can be used up to 6-12 inches from the holder.

Various types of steel including stainless, cast iron, copper alloys, nickel alloys, aluminum, and concrete can be cut using a thermic lance.

Typically you will need between 75 to 120 psi to cut most materials. To cut concrete, pressures may require as high as 150 psi. In addition, depending on the lance diameter a high flow rate of oxygen from 30 – 90 scfm will be required for proper operation. A lance will need 99.5%+ pure oxygen supplied from either compressed cylinders, a liquid oxygen vaporizer system, or a high-pressure plant line.

Oxygen is one of the most dangerous substances in the world. The air we breathe contains only 21% oxygen. Higher concentrations of oxygen will dramatically reduce the kindling point of all materials. The kindling point is the lowest temperature at which a substance will spontaneously combust in a normal atmosphere without an external source of ignition. Materials will also burn more vigorously in an oxygen-enriched environment.

A regular pipe will have protective coatings and contaminants that would result in disaster for the operator. Our lance pipes are made using the ERW process (electric resistance weld) according to A53 dimensional and mechanical specifications. Most importantly, we clean all of our pipes and steel rods in an alkaline bath to remove all traces of oil, grease, and contaminants which would react violently in the presence of high-pressure oxygen.

Thermic lances are available in 1/8” (0.405” OD), 1/4” (0.540” OD), 3/8” (0.675” OD), 1/2” (0.840” OD), and 3/4” (1.050” OD) sizes and lengths up to 10’6”.  Plain lance pipes are available up to 1” (1.315” OD) and lengths of 21’.

In addition to a standard deburred and chamfered Plain-End, we also offer Push-Fit (Quick-Connect), Threaded, and Threaded & Coupled end connections.

Operators should be provided with the best personal protective equipment and proper instruction on safe usage and cutting operations. Only high flow pressure regulators and suitably sized hose assemblies designed for oxygen use should be used. Lance holders, safety devices, and flow control valves must be matched to the lance pipe size selected. Make sure all your equipment is clean, free of oil or grease, and in good working order.

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and/ or Services as identified in any such order or quotation as the case
may be.
Conditions these terms and conditions of sale and supply as from time to time varied
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offered to Buyer, subject to these Conditions.
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reasonable care and skill under any Quotation or Contract, as applicable.
Supplier Canpipe
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