Wannan layin samarwa ya ƙunshi isar da bututun ƙarfe na ƙarfe, kashe-kashe (gaba da baya kowane saiti), na'urar dumama mai ƙarfi, ƙirar kusurwar dama, ƙirar dunƙule guda ɗaya, na'urar sanyaya. Kowane karfe bututu za a iya haɗa ta musamman connector, gane m shafi extrusion samar. Samfurin ƙarshe yana da fasalulluka na ɗimbin lulluɓi, ƙirar filastik kauri iri ɗaya, tsayin daka, santsi da tsaftataccen wuri.
Muamfani