Z3TY-24, Z3TY-33, Z3TY-33A electric round-steel pipe threading machine is threading mainly the round-steel thread, and also can threading the water pipe's thread, electric pipe's thread and so on. The products have the advantage just as advanced design, compact structure, reliable quality, convenient operation, high productivity, low noise, small volume and convenient moving and so on. It applies to kinds of project construction and middle and small type factory's thread cutting and rolling for full pipes.