... for line/insulation supporting pinThe product is made of galvanized screw, nylon tube and round fixing sheet.Application: Construction,heating ... the customers usages. Detail Specifications: MaterialLow carbon steel for screw, nylon or PE or PP for tube and diskSurface TreatmentZinc ... --150mmColorWhite, blue, grey, red for nylon tube and disc High quality plastic heat insulation nail(split-type nail)