An I-beam's label includes critical details for identification, compliance, and traceability:
Manufacturer's ID: Name, logo, or plant code of the producing steel mill.
Material standard/grade: Specifies the industry standard (e.g., ASTM A36, EN 10025-2, JIS G3101) and grade (e.g., S355JR, SS400).
Dimensions: Height, flange width, web thickness, flange thickness (e.g., 200x100x7x11mm), and length (e.g., 10m, 33ft).
Heat number: A unique alphanumeric code linking the beam to its production batch, enabling traceability to mill records.
Weight: Per-meter weight (e.g., 27.9 kg/m) and total weight per piece.
Certification marks: Symbols like CE (Europe), ASTM certification, or JIS marks, confirming compliance with regional standards.
Coating info (if applicable): Notes on protective coatings (e.g., hot-dip galvanization, epoxy paint) and coating thickness.
Labels are printed on durable, weather-resistant tags (often plastic or metal) attached to beam bundles, or directly stamped/etched onto the beam surface to withstand transportation and storage.