The high frequency steel pipe making machine is intended for manufacturing of round pipe from cold-rolled and hot-rolled coil strip by means of unclosed tubular blank with its subsequent welding into tube, edge heating by means of solid state high-frequency welder, longitudinal seam welding in rolls of tube welding machine, cooling, further sizing or shaping and on-stream cutting of endless tube in measured lengths. Finished product will be of round, square or rectangular pipe.
High frequency steel pipe making machine composes of a complete set of pipe forming machine, rotating capstan, decoiler, straightening machine, shearing, accumulator, tube mill section, flying saw and packaging device.
The stages of the line, in order
The line runs from coil to cut length in one pass. The units named above work in this order:
- Decoiler — pays the coil strip off into the line
- Straightening machine — levels the strip before forming
- Shearing — cuts the strip when the coil is changed
- Accumulator — holds strip for the coil change
- Pipe forming machine — rolls the strip into an unclosed tubular blank
- High-frequency welder — heats the strip edges for the longitudinal seam
- Tube mill section — closes and welds the seam in rolls, then cools and sizes the tube
- Rotating capstan — hauls the tube through the line
- Flying saw — cuts the moving tube into measured lengths
- Packaging device — takes the cut lengths off the line
The finished product is round, square or rectangular pipe, cut to the length you specify.
Frequently asked questions
What is a high frequency steel pipe making machine used for?
It makes pipe from cold-rolled or hot-rolled coil strip. The strip is formed into an unclosed tubular blank, the edges are heated by a solid state high-frequency welder, the longitudinal seam is welded in rolls, and the tube is then cooled, sized or shaped and cut on the run into measured lengths.
Which pipe shapes can it produce?
Round pipe, and square or rectangular pipe after the sizing or shaping stage.
How does the line handle a coil change?
The accumulator holds strip for the coil change, and the flying saw cuts the tube while it is moving.
How is the cut length set?
The tube is cut on the run in measured lengths, so the length is set on the saw rather than cut in a second operation.
How many units are in the line?
The line is listed as nine units: pipe forming machine, rotating capstan, decoiler, straightening machine, shearing, accumulator, tube mill section, flying saw and packaging device.
What to send for a quotation
The line is built to the buyer's specification. To quote it, the following are needed:
- Pipe section and size range — round, square or rectangular
- Wall thickness, minimum and maximum
- Coil material and coil width
- Cut length required
- Required line speed in m/min
- Power supply at your site, voltage and frequency
Related pages: steel pipe machine and what is high frequency welding pipe machine.
