IEC, ANSI, BS, AS class
Porcelain disc suspension insulator is used for insulation and supporting in high voltage overhead transmission and distribution lines. They are usually connected and assembled into insulator string and used on different levels of line voltage.

Connected fitting type: ball & socket type; clevis & tongue type
Strength can be 40 KN, 45KN, 60KN, 70KN, 80KN, 100KN, 120 KN, 125KN,160KN, 210KN, 300KN
According to different use environment and region, the insulator can be divided into standard type and anti-pollution type.

Main type:
ANSI C29.2 type: 52-1, 52-2, 52-3, 52-4, 52-5, 52-6, 52-8, 52-9
IEC383, BS137 type: U70BL, U70BS, U100B, U120B, U160B, U210B, U300B
 
According to connected way, the suspension insulator can be divided into ball and socket type & clevis and tongue type. The surface of the cap and pin ball of insulator should be hot dip galvanized. If the area is highly polluted, the pin ball can be added the zinc sleeve. The locking device of W and R spring split is made of bronze or stainless steel. They have good flexibility and anti-corrosion nature.