How seamless tubes are manufactured
A seamless pipe is made from a tube that has been expanded in diameter, so that it has no seams. In industry, a seamless tube or pipe refers to a hollow metallic tubular product manufactured by forcing a solid round material through an extrusion die to form an extended body. The process is also known as cold expansion or roll forming. A seamless pipe can be manufactured from many materials such as brass, copper, carbon steel and stainless steel. All these pipes have a relatively smooth internal surface which lends itself to easy cleaning making them more hygienic than their welded counterparts which are more likely to harbor bacteria etc. Seamless pipes are also available in grades appropriate for use with many applications.