Steel pipes come in several manufacturing styles — SSAW, LSAW, ERW, and Seamless — each designed for specific industrial needs. However, when you see a pipe with a visible spiral seam running along its body, it’s likely a Spiral Submerged Arc Welded (SSAW) pipe. Understanding how to distinguish SSAW pipes from other types is essential for engineers, buyers, and project managers who want to select the right material for their applications.