Material: Porcelain This Line post insulator is used for all circuit and power station standard ... : IEC, ANSI, BS, DIN AND GB etc A line post insulator consists of one or more ceramic or glass parts ... includes the stud or bolts.In operation, it is generally mounted vertically and horizontally. Standard: IEC, ANSI, BS, AS, DIN, ... : manufactured in accordance wih the customer's drawing line post insulator