As we all know, our group, Tianjin Tewoo, is the professional manufacturer and exporter of seamless pipes, which makes them to 100% excellence because our production lines are with extreme specificality.
Two processes are involved for manufacturing seamless pipes: the cross-rolling method and the extrusion method. The first is generated by perforating the tube with a diagonal roller and extending it with a rolling mill. This procedure is quick to perform, but the tube blank requires high processability requirements. This method is the most recommended one for the production of carbon steel and low alloy steel tubes.
The second uses a drilling machine to bore a rough pipe or steel ingot. It then punches into a steel tube using an extruder. This process is definitely less efficient and is usually used to produce high-strength alloy steel tubes.
Both ways of manufacturing seamless pipe must first heat the tube blank or ingot. The resulting is that steel pipe can be called hot-rolled pipe. Hot-working pipes can sometimes be cold-worked, depending on the final requirements. For this, there are two methods: cold drawing( pulling the steel pipe through the extrusion die to make it longer and thinner) or cold rolling( hot rolling is applied to the cold working method). Cold working can improve the dimensional accuracy and finish of pipe processing and improve the mechanical properties of materials.
Thus, please don't hesitate to communicate with us if you have any seamless pipe inquiries: acero.sigridsun@gmail.com
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