Product forms and producers

Forms of stainless steel products

Pipes and tubes

There are two types of pipes/tubes. One type covers seamless stainless steel pipes/tubes made by hollowing out billets into "seamless" tubular shapes and the other type covers welded stainless steel pipes/tubes made by folding steel sheets or strip into tubular shapes and then welding them. Seamless pipes/tubes generally have heavy wall thicknesses relative to their outside diameters, while welded pipes/tubes generally have light wall thicknesses. Seamless pipes/tubes have a higher reliability since there is no "seam" involved. But due to their relatively large production lots, seamless pipes/tubes are sometimes placed at a disadvantage in terms of economical efficiency.

Product form

Round pipes/tubes

Square pipes/
tubes

Producers

Welded

Seamless

JFE Steel Corporation