... AS,DIN,ANSI and IEC Specification:1. Porcelain or glass insulators for low & medium or high voltage2. Voltage:0.4KV ... `132KV3. The disc suspension insulators can be met BS,AS,DIN,ANSI and IEC ... type, spool/ shackle type,strain typea. Disc insulatorsDisc suspension insulators for high voltage lineASNI:52-1,52-2,52-3 ... We will do the best for you! porcelain spool insulators