Suspension type insulators overhead lines is one main part of electrical systems, suspension type insulators can be used on transmission and distribution overhead lines.

The surface of shells exposed after the assembly, which shall be glazed for porcelain insulators, shall be relatively smooth and free of imperfections.

Color for Suspension type insulators overhead lines is not part of ANSI C29.2-92(R1999). If gray is required, it shall be in accordance with ANSI Z55.1, and shall conform to Munsell notation 5BG 7.0/0.4 with the following tolerances:
1. Hue: ±12 (3G to 7B)
2. Value: ±0.5
3. Chroma:-0.2 to +0.6

The metal part of Suspension type insulators overhead lines, except for cotter keys, shall be made of a good commercial grade of malleable iron, ductile iron, steel, or aluminum. Ferrous parts, other than stainless steel, shall be galvanized in accordance with ASTM A153-82.

Suspension type insulators overhead lines also are made from silicone rubber materials consisting of Fiberglass rod, insulator metal fittings and silicone rubber housing.

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Composite suspension insulator
Porcelain suspension insulator
Disc suspension insulator
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