焊 (w)

(hàn) to weld

焊接 (w)

(hànjiē) to weld; welding

焊枪 (w)

(hànqiāng) welding torch

焊丝 (w)

(hànsī) welding wire

焊 (w)

(hàn) to solder; weld by heat

焊锡 (w)

(hànxī) solder