They are burr-free electrical installation pipes.
It has hot dip galvanized coating.
It is of Far East origin and is flexible.
The physical information specified is within ± 5% tolerance.
Their standard length is 3.05 meters and one end is with a sleeve.
Especially in heavy industry (iron and cement factory). It is used in refineries, power plants and facilities where ex-proof installations are required, underground, indoor and outdoor.