Material girder is a type of structural support made of STEEL. It is used in construction to provide support for buildings and other structures. It is usually composed of two or more STEEL beams connected together with bolts or welds. The STEEL beams are usually reinforced with additional STEEL plates or bars to increase the strength of the girder. Material girder is a strong and reliable form of support that can withstand heavy loads and is often used in bridges, skyscrapers, and other large structures.