EN 10210 is a standard for hot-rolled structural hollow profiles developed by the European Committee for Standardization (CEN). It covers both seamless (SMLS) and welded (e.g., ERW, LSAW) processes and is suitable for load-bearing structures such as buildings, bridges, and offshore platforms. As a harmonized standard of the EU Building Products Regulation (CPR 305/2011/EU), EN 10210 steel pipes require CE certification and are one of the preferred materials for high-end structural engineering in Europe and globally. Compared with Chinese national standards (such as GB/T 8162 "Seamless Steel Tubes for Structural Purposes" and GB/T 3094 "High Carbon Chromium Bearing Steel Seamless Tubes"), EN 10210 has stricter requirements for dimensional accuracy, low-temperature toughness, and material purity, better meeting the engineering needs of large spans, high loads, and extreme environments (such as the Arctic and deep sea).