Must be compatible with the base material: The welding wire should be made of the same or compatible material as the PVC product being welded (e.g., UPVC, CPVC, soft PVC, etc.) to ensure weld strength and chemical resistance.
Length and packaging: Select coils (3–10 kg) or cut to length (1–2 m) according to usage to avoid waste.
Temperature and chemical resistance: If used in chemical pipelines or high-temperature environments, confirm the welding wire's temperature resistance rating (e.g., continuous use at 70℃) and acid and alkali resistance.
Welding speed: The welding torch movement speed should match the welding wire's melting rate to avoid incomplete welds or carbonization.
Choose reputable manufacturers: Prioritize suppliers with many years of operating experience and who provide testing reports.
Check certifications: Welding wire for home improvement or engineering projects should have 3C, RoHS, and other compliance marks.
When purchasing PVC welding wire, it is necessary to select the matching wire type according to the type of material being welded (such as rigid PVC or flexible PVC) to avoid poor fusion due to differences in composition. In addition, attention should be paid to the diameter of the welding wire (common specifications are 2.0mm, 3.0mm, and 4.0mm). If the diameter is too small, the welding efficiency will be low, and if it is too large, it will be difficult to fill small gaps.
