I-PVC yokufudumeza ucingo, ebizwa ngokuba yintambo yokufudumeza, eyaziwa ngokuba yi-PVC yocingo lokufudumeza, ukusetyenziswa kwangaphakathi kwe-nickel-chromium alloy, i-Constantan alloy, i-alloy ye-copper-nickel njengomqhubi wokufudumeza, ukusetyenziswa kwe-PVC yokufakelwa kwe-PVC, umbala weyunithi yobukhulu obukhethiweyo. , umda weqondo lokushisa kwimveliso ye-105 ° C, ixesha elide lama-80 ° C ngaphantsi kobomi benkonzo ukuya kuthi ga kwi-8-12 iminyaka, ukuxinwa kwemveliso kunye nokusebenza ukugoba egqwesileyo, Iqhele ukumelana namandla okutsala angaphantsi kwe-35KG.