Bending Steel Conduit Step-by-Step Guide Step by step guide on how to bend steel (metal) conduit to 90 degrees full demonstration. Students training aid for bending 20 mm Steel (metal) Conduit to produce a 90 degree bend to the correct measurement. Includes a full demonstration on how to produce a bend using set square and a conduit bending machine so the end of the conduit to the back of the bend is at the correct measurement. How to bend metal conduit to the correct length and to 90 degrees an