EN 10219  standard is a very important European standard. Its full title is "Cold-Formed Welded Structural Hollow Sections - Part 1: Technical Delivery Conditions" and "Part 2: Dimensions and Sectional Properties."Simply put, EN 10219 specifies the material, manufacturing, dimensions, tolerances, mechanical properties, and inspection requirements for cold-formed (cold-finished) welded hollow sections (such as square tubes, rectangular tubes, and round tubes) used in building...