Answer Posted / azmi abullais

Seamless (SMLS) Steel Pipe is made from a solid round steel
‘billet’ which is heated and pushed or pulled over a form
until the steel is shaped into a hollow tube. The seamless
pipe is then finished to dimensional and wall thickness
specifications in sizes from 1/8 inch to 26 inch OD.

how its made????????
it is extruded through a mold. metal pipe is poured semi
molten through a mold and forced out the other side.
plastic is molten and forced thru a mold as well. there
used to be a play-doh machine...

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