0004450094 - ESAB GPB Propane Cutting Tip 40-60mm

Technical Overview of the ESAB GPB 40-60mm Cutting Nozzle

The ESAB GPB 40-60mm is a specialized cutting nozzle engineered for industrial oxy-fuel cutting applications utilizing slow-burning fuel gases such as Propane or Natural Gas. Unlike acetylene nozzles, the GPB series utilizes a two-piece construction consisting of a brass outer sleeve and a copper inner splined member. This design is critical for alternative fuel gases, as it creates a recess that anchors the flame, ensuring stability even at high flow rates required for cutting thicker sections.

This specific nozzle is calibrated for a cutting range of 40mm to 60mm (approximately 1.5 to 2.5 inches). Within this thickness range, the nozzle maintains a coherent oxygen cutting stream that efficiently oxidizes the steel while clearing the kerf of molten slag. The preheat flame configuration is optimized to bring the base metal to ignition temperature rapidly without overheating the top edge, preserving the geometry of the cut.

Manufactured to ESAB's rigorous standards, the GPB nozzle features precision-drilled ports and high-grade alloy construction. The separation of the preheat and cutting gas paths within the nozzle minimizes the risk of flashbacks and sustains consistent performance over long operational periods. It is an essential consumable for fabrication shops, scrap yards, and maintenance departments transitioning to or currently utilizing propane for its cost-effectiveness and availability.

Proper maintenance of the nozzle face and seating surfaces will extend the service life of this component. Operators should ensure that the nozzle is seated correctly in the torch head to prevent gas leaks and ensure optimal mixing characteristics (if using an injector torch) or separation (if using a nozzle-mix torch).