INVESTIGATION ON PRODUCTION PROCESS OF HOT-ROLLED SMALL-DIAMETER TUBE

The article gives a description to the process parameters, roll and mandrel performance parameters, surface quality and dimensional accuracy of 57mm~76mm small-diameter pipes hot-rolled on two-roll tube mill or on three-roll tube mill. Experiment shows that under the industrial conditions the hot-rolled small diameter pipes, which can meet the reguirements specified, can be produced on two-roll tube mill.