Steel tolerances define the acceptable dimensional variation in steel products and play a critical role in fabrication accuracy, structural performance, and project compliance. Understanding the differences between EN and ASTM steel tolerances helps buyers, engineers, and contractors avoid costly rework, rejection, and delays. What Are Steel Tolerances? Steel tolerances refer to the permissible deviation in dimensions such as thickness, width, straightness, and weight from nominal values. These tolerances are defined by international standards and ensure consistency, safety, and interchangeability across steel products. Why Steel Tolerances Matter in Construction and Fabrication Tolerances directly impact: Fit-up accuracy [...]