31472261flitch beamsPT2026-03-30 21:07:06UF31472262beams, flitchNDUF31472263beams, flitch plateNDUF31472264beams, sandwichNDUF31472265flitch beamNDUF31472266flitch girdersNDUF31472267flitch plate beamsNDUF31472268girders, flitchNDUF31472269sandwich beamsNDBT31458547built-up beamsPT