Miller Smith ST615 Heavy Duty Propane & Natural Gas Heating Tip

Maximize Heat, Minimize Cost

Upgrade your oxy-fuel setup with the Miller Smith ST615 Heavy Duty Heating Tip, the definitive solution for welders and fabricators looking to harness the raw power of Propane, Natural Gas, or Propylene. In an industry where time is money and gas costs can eat into profits, this tip is built to deliver massive heat output efficiently. It is the perfect tool for those tough, heat-intensive jobs that require deep, penetrating thermal energy, such as preheating thick steel sections, bending heavy structural members, or expanding large metal components to remove seized parts. By utilizing alternate fuels, you not only save significantly on gas costs compared to acetylene but also gain the logistical advantage of using fuels that are often more safer to transport and readily available on job sites.

The ST615 isn't just about economy; it's about uncompromised performance. Depending on your chosen fuel gas, you can achieve up to 280,000 BTU/hr (with Propylene), ensuring that you spend less time waiting for the metal to reach critical temperature and more time actually working. The advanced fluted tip design stabilizes the flame for a smooth, consistent burn, even at the high flow rates required for heavy heating. This means less popping and a more controllable heat zone. At nearly 16 inches long, this tip assembly acts as a necessary extension, keeping your hands, gloves, and the torch handle at a safer, cooler distance from the work zone. This ergonomic advantage significantly reduces operator fatigue and heat stress during those long, grueling heating operations.

Compatibility and ease of use are key features of the ST615. This tip fits the popular and reliable Smith WH200 and SW1B torch handles, integrating seamlessly into your existing heavy-duty Smith outfit without the need for complex adapters. However, power comes with responsibility. Because this beast moves a substantial volume of gas to generate that intense heat, you'll need to ensure your rig is up to the task. This means equipping your regulators and hoses with high-flow flashback arrestors to maintain safety without choking the flow. Additionally, a sufficient fuel supply—like a 100lb propane tank—is recommended to keep the gas flowing smoothly without freezing up the cylinder. Equip your torch with the ST615 and experience the efficiency, power, and cost-savings of heavy-duty alternate fuel heating.

Whether you are in the field repairing heavy earth-moving equipment or in the shop fabricating structural steel, the ST615 gives you the thermal advantage you need. It turns your standard torch handle into a powerhouse heating tool, allowing you to tackle jobs that would otherwise require much more expensive or specialized equipment.