As exploration and production of oil and gas move to deeper waters, a precise understanding of the mechanical behavior of tubular structures becomes increasingly important. The increasing external pressure combined with the hostility of the environment, place stringent demands on the design, installation and operation of pipelines, flowlines, risers and casing. This volume provides an in depth understanding of the major limit states that affect these structures, ranging from collapse under external pressure to burst under internal pressure, as well as how these factors can affect the manufacturer of the pipes, their installation, and their long term operation on the sea floor. The book includes an introduction to offshore facilities and pipeline installation methods used to motivate the limit states considered. A chapter on pipe and tube manufacturing processes outlines the geometric and mechanical property characteristics of tubular s used in this industry. The next nine chapters analyze several of the limit states encountered, including local buckling and collapse caused by pressure, bending, tension, compression and combinations of these.