... Voltage Pin Type Insulator 55-4 1,Material: Porcelain 2,Port:Fuzhou 3,Payment Term:T/T,L/C 4,Standard:ANSI ... Low & Medium Voltage Pin Type Insulator 55-4 High voltage porcelain insulator ... ,54-4,55-5,etc.2)Material:Porcelain 3)Standard:ANSIMAIN DIMENSIONS AND STANDARD PARTICULARSNote:The left side of slant is Comman ...