Katangar haɗin sarkar (kuma ana kiranta da igiyar waya, shingen raga na waya, shingen sarkar waya, shingen guguwa, shingen guguwa, ko shingen lu'u-lu'u) nau'in shinge ne wanda aka saba yi daga galvanized ko ƙarfe mai rufi LLDPE waya.Wayoyin suna gudana a tsaye kuma suna lanƙwasa a cikin tsarin zig-zag ta yadda kowane "zig" ya haɗa tare da waya nan da nan a gefe ɗaya kuma kowane "zag" tare da waya nan da nan a daya.Wannan yana samar da alamar lu'u-lu'u da aka gani a cikin irin wannan shinge.
