unique tube - making process.
NOTE : Hot - dip galvanized Conduit conforming to BS 4568 specification , complyingwith its class 4 "heavy protection both inside and outside " requirement, is also available.
Inside weld bead controlled to a minimum for easier wire pulling. Screwed on both ends to BS 31 and fitted
Trade sizeOutside DiameterApprox. Inside DiameterMin Wall ThicknessStandard WeightFinished ConduitsinchmmmmmmPer 100 Ft(30.79mtrs)??1/221.3416.342.6437.2030303/426.6721.232.7249.443030133.4027.003.2037.0330251-1/442.1635.413.3898.8830251-1/248.2641.253.51119.303025260.3352.913.71158.763025