Welded Tubing vs. Seamless Tubing

Finally, you will need to decide whether you need seamless stick or coil tubing or welded stick or coil tubing. You make a welded tube by welding a strip of metal into tube form, while you make a seamless tube through extruding steel from a metal bar and pulling it through a tube-shaped die.

While welded tubes tend to be more economical, they also tend to be less corrosion-resistant. In addition, seamless tubing gives you a 20 percent increase in working pressure over the same size and material of the welded tube.