本实用新型涉及焊材领域，具体的说是一种单侧药皮钎料环。包括钎料芯和药皮，所述钎料芯为采用细丝钎料通过绕制制成的簧状结构，所述药皮包覆在细丝钎料上并位于钎料芯的外周。本实用新型可避免脱落掉块的药皮造成的污染和腐蚀，与被焊管路装配方便且传热速度较快。

The utility model relates to the field of welding materials, in particular to a single-sided coating solder ring. It comprises a brazing filler metal core and a coating, the brazing core is a spring-like structure made by winding a thin wire brazing filler metal, and the coating is wrapped on the thin brazing brazing filler metal and is located on the outer periphery of the brazing filler metal core. The utility model can avoid the pollution and corrosion caused by the falling off of the coating, is convenient to assemble with the welded pipeline, and has a faster heat transfer speed.