... resin by pultrusion. Insulator Core Rod Diameter: φ12, φ16, φ16.5, φ16.8, φ17.48, φ18,φ16, φ16.94, φ17.48, φ18, φ20, φ22, φ24 ... ,φ90,φ110 Insulator Core Rod SpecificationsDiameter (mm) AApprox weight(kg/m)16 0.43170.48117.480.508180.53200.66220.8240.95251.03281 ...