Umugozi wumuringa wibikoresho bikozwe mumashanyarazi umwe cyangwa ibiri ikomeye yo hagati cyangwa umuringa woroshye wahagaritswe, hamwe na PVC cyangwa XLPE, insimburangingo yo hanze igizwe ninsinga nyinshi zumuringa zoroshye zomekeranye mumashanyarazi yumuzingi wumukara ushobora gukorwa muri PVC, polyethylene ya termoplastique. cyangwa XLPE.