Made of pre galvanized steel strip with extra - smooth surface and highly - adherent zinc coating by the 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 with a zinc - coated coupler on one end. Packed in bare bundles, but the unsocketed ends protected with plastic caps. Bundle ends wrapped with for further protection. Easier to cut, easier to thread,
Trade sizeOutside DiameterApprox. Inside DiameterMin Wall ThicknessStandard WeightLenthinchmmmmmmPer 100 Ft(30.79mtrs)mm1/220.8020.701.7828.103029.03/426.3026.101.9138.703029.0132.9032.802.1656.903022.61-1/441.8041.602.1673.503022.61-1/248.0047.802.2985.203022.6260.1059.902.41114.103022.6