W12x35 W12x40 W12x45 h profile steel difference
W12x35 h beam: height about 12.53 inches (318 mm); width about 6.52 inches (166 mm); web thickness about 0.435 inches (11 mm); flange thickness about 0.62 inches (15.7 mm); weight per foot is 35 pounds/foot (about 52.1 kg/meter).
W12x40 steel h beam: height about 12.31 inches (313 mm); width about 7.65 inches (194 mm); web thickness about 0.43 inches (10.9 mm); flange thickness about 0.67 inches (17 mm); weight per foot is 40 pounds/foot (about 59.5 kg/m).
W12x45 h section steel: height about 12.19 inches (310 mm); width about 8.02 inches (204 mm); web thickness about 0.475 inches (12.1 mm); flange thickness: about 0.72 inches (18.3 mm); weight per foot is 45 pounds/foot (about 67 kg/m).
Applicable scenarios
W12x35 h shaped steel is suitable for building structures under medium load conditions, such as beams or columns in residential buildings or light commercial buildings.
W12x40 h beam structure is suitable for multi-story buildings with higher load requirements, industrial plants or as a secondary member of a bridge.
W12x45 h section beam is suitable for heavy industrial buildings, long-span bridges or other engineering scenarios with high requirements for bearing capacity.
