Used with standard welding gun-nozzle, this product is 304 high-temperature resistant stainless steel alloy. It has good resistance, heat resistance (up to about 800 degrees), low-temperature strength and mechanical properties. It will not have problems such as and oxidation deformation under high temperature for a long for time. It is an for ideal accessory for welding accessories. Used for welding , polyethylene, PVC and polycarbonate. stick electrode / smooth pull welding / high-precision. Mainly suitable for hot air guns which equipped with diaphragm pump.Stainless steel construction for more durability and high temperature resistance and anti-leakage.Fine workmanship and convenient and practical. This set of speed-welder is titanium-allot, sturdy and . which can bear high temperature and leaking. With good resistance to high temperature. Resistant to high temperature, leakage, convenience to replace, versatility.