Seamless Pipe
It is solid pipe without seam welding. It extruded. Pipe made from billets directly- hot&cold extruded. Mainly used for high pressure applications.
Welded Pipe
Flat skelp is to be converted gradually in to circular form and weld through high frequency welder, weld seam is appear in the form of offset, which is removed thro o.d. snarfing tool