Propane Cutting Nozzle PNM Type

Propane Cutting Nozzle – PNM propane cutting tips used in the cutting of Mild Steel using the Oxy/Propane process and Type 3, 4 and 5 style torch equipment.

PNM propane cutting nozzles Available in sizes – cutting for up to mm.

PNM 1/32    CUTS 6MM

PNM 3/64    CUTS 12MM

PNM 1/16     CUTS 75MM

PNM 5/64    CUTS 100MM

PNM 3/32    CUTS 150MM

PNM 1/8      CUTS 300MM

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Propane vs. Acetylene Gas for Welding & Cutting 

Flame Characteristics:

Propane, also known as LP gas, when paired with oxygen, ignites at a temperature of 2800 degrees Celsius, while acetylene reaches 3100 degrees Celsius. Acetylene’s hotter flame enables swift piercing of tough materials, making it ideal for cutting or welding rounded metal edges.

Thermal Efficiency: Acetylene boasts a British Thermal Unit (BTU) value of 1470 per cubic feet, whereas propane stands at 2498 per cubic feet. Despite acetylene’s higher flame temperature, propane delivers substantial heat output efficiently, particularly during preheating stages.

Welding Application: Propane is unsuitable for gas welding due to its lack of a reducing zone like acetylene’s, which cleanses steel surfaces during welding. Advantages of Acetylene:

Safety:

Acetylene’s wider flammability limit (2.5% to 82% in air) and lighter-than-air properties make it safer to handle and store than propane. Acetylene cylinders are designed with a porous mass and acetone, ensuring secure storage.

Superior Welding Quality:

Acetylene’s focused flame provides better weld quality and cutting precision compared to propane, thanks to its higher thermal energy concentration.

Energy Efficiency: Oxy acetylene welding, requiring no electrical power, is gaining traction for welding high-strength steel materials, thereby reducing overall electricity consumption. Economic Considerations: Despite being more expensive, acetylene’s lower oxygen consumption offsets the cost difference compared to propane, making it a cost-effective choice for welding applications.