What types of torches can be used for oxygen-fuel gas welding and cutting?

The correct answer focuses on the safety and reliability standards that must be adhered to in oxygen-fuel gas welding and cutting applications. Using torches and regulators that are approved by recognized organizations such as Underwriters Laboratories (UL), Factory Mutual (FM), or the American Welding Society (AWS) ensures that the equipment meets stringent safety and performance criteria. These approvals indicate that the tools have undergone rigorous testing to ensure they can safely handle the pressures and temperatures involved in the welding and cutting process.

In contrast, general welding applications may encompass a wide variety of equipment that doesn't necessarily meet these specific safety standards, and commercially available torches may not be designed for the particular hazards associated with oxygen-fuel environments. Electric torches are typically used in processes like arc welding and do not apply to oxygen-fuel gas systems. Thus, the focus on UL, FM, or AWS approved equipment serves as a critical factor in ensuring safety and efficacy in welding and cutting operations.