American standard casing protective cover

1,Definition of American standard casing protective sleeve

A conduit protection sleeve is a protective device used to protect cables, pipelines, or ducts from mechanical damage, corrosion, high temperatures, and other external environmental influences. It is usually installed outside the conduit (such as electrical conduits, pipe penetrations) and complies with relevant American standards (such as ANSI, UL, etc.).

2,Main applicable standards

ANSI/UL standard

UL 651: Requirements for fire and corrosion resistance of PVC conduit and protective covers for electrical use.

ANSI C80.1: Specificatio dimensionibus et proprietatibus mechanicis conduiti electrici steeli.

NEC (National Electrical Code)

Specify the installation requirements for protective sleeves in cable wiring systems, such as compression and fire ratings.

ASTM International Standard

Material performance testing (such as ASTM D1784 requirements for PVC strength).

3,Common materials and characteristics

PVC (polyvinylchloridus)

Adventationes: Corrosion resistance, good insulation, low cost, suitable for indoor or mildly corrosive environments.

Disadvanta: Non resistantur altis temperaturis (normale minus 60° C).

HDPE (High Density Polyethylene)

Strong impact resistance, suitable for underground direct burial or high mechanical stress environments.

Metali materiales (galvanized steel, stainless steel)

Used for high protection level scenarios (such as explosion-proof, high-temperature, or heavy machinery protection).

composite material

Like fiber-reinforced plastic (FRP), it combines light weight and high strength.