The bottom on the perforated insulation pins may be adhered making use of Boss 180 Multi-Seal adhesive or they are often screwed or nailed set up. Mini-Cupped Weld Pins: These insulation pins basically weld towards the sheet metal duct and the head on the pin retains the insulation in position. https://bsfixings49260.kylieblog.com/30489611/not-known-factual-statements-about-insulation-pin