A steel beam is an I-beam, which is also referred by different names such as H-beam, Wide-Flange Beam (W-Beam), Universal Beam (UB), Rolled Steel Joist (RSJ), which is also referred as Double-T in Polish, Spanish, German and Italian is a beam that is widely used in construction industry. This beam is available in I-Shape (a reason for its name) and H-Shaped cross-section.