For some demanding applications, welded stainless tubes are no longer suitable and there is a requirement for seamless tubes. An example is oil lines in hydraulic systems where the tube needs to be formed by bending without cracking at the same time as it must withstand high internal pressure in service. Thin-walled seamless tubes of stainless steel are normally manufactured by extrusion.
For some demanding applications, welded stainless tubes are no longer suitable and there is a requirement for seamless tubes. An example is oil lines in hydraulic systems where the tube needs to be formed by bending without cracking at the same time as it must withstand high internal pressure in service. Thin-walled seamless tubes of stainless steel are normally manufactured by extrusion.
