Tube-to-tube welding machines are specialized welding devices, with only a handful of manufacturers globally producing them. Currently, these machines are used for welding metals such as stainless steel, carbon steel, and titanium alloys with wall thicknesses under 3mm, as well as copper pipes under 2mm. A single welding power source is typically universal for these materials. The differences lie in the welding guns and dies, with different die sets required for varying pipe diameters.

When selecting equipment, focus on these key points:

- Assess the wall thickness and diameter of the pipes you need to weld to determine how many torches and mold sets are required.

- Review the equipment's specifications, performance, component origins, and manufacturing location to ensure it comes from a reputable supplier capable of providing technical support and after-sales service.

- Investigate the equipment's welding pass rate.

- Compare equipment prices.