Umbhobho wensimbi ojikelezayo luhlobo lwebhobho ene-cross-section ejikelezayo, eneendawo ezininzi zesicelo.Ayinayo kuphela iimpawu ezizodwa, kodwa inoluhlu olubanzi lwamathemba okusebenza.
Ubuchwephesha: Enye, ishushu iqengqeleke, iQingle, iQingle, i-ERW, i-high-frequency welded, Extruded