Bobco Metals Co.

United States

Structural Tubing is available in steel and aluminum in a wide range of sizes in round, square, and rectangular shapes. It has become a most important basic section for structural applications because of its adaptability to such varied uses. Structural tubing is an efficient structural member with many inherent advantages, includes strength and lightness. Structural Steel Tubing is made from flat rolled basic oxygen steel, which is formed into a tabular shape and then welded by the electric resistance process. In this continuous welding process there is no loss of properties, and no irregularity that may be observed in the structure.

In structural engineering, the tube is the name given to the systems where in order to resist lateral loads (wind, seismic, etc.) a building is designed to act like a three-dimensional hollow tube, cantilevered perpendicular to the ground. The system was introduced by Fazlur Rahman Khan while at Skidmore, Owings and Merrill's (SOM) Chicago office. The first example of the tubes use is the 43-story Khan-designed DeWitt-Chestnut Apartment Building in Chicago, Illinois, completed in 1963.The system can be constructed using steel, concrete, or composite construction (the discrete use of both steel and concrete). It can be used for office, apartment and mixed-use buildings. Most buildings in excess of 40 stories constructed in the United States since the 1960s are of this structural type. A tube, or tubing, is a long hollow cylinder used to convey fluids (liquids or gases).The terms "pipe" and "tube" are almost interchangeable, although minor distinctions exist generally, a tube has tighter engineering requirements than a pipe. Both pipe and tube imply a level of rigidity and permanence, whereas a hose is usually portable and flexible. A tube and pipe may be specified by standard pipe size designations, e.g., nominal pipe size, or by nominal outside or inside diameter andor wall thickness. The actual dimensions of pipe are usually not the nominal dimensions: A 1-inch pipe will not actually measure 1 inch in either outside or inside diameter, whereas many types of tubing are specified by actual inside diameter, outside diameter, or wall thickness.

A low-carbon steel, having higher manganese content than certain other low-carbon steels, such as 1020. Being richer in manganese, 1018 is a better steel for carburized parts, since it produces a harder and more uniform case. It also has higher mechanical properties and better machining characteristics. The hot rolled bars used in the manufacture of this product are of special quality. Most cold finished bars are produced by cold drawing. In this process, oversize hot rolled bars, which have been cleaned to remove scale, are drawn throung dies to the required size. The larger sizes are generally turned and polished, the hot rolled bars having been machine turned, rather than drawn, followed by abrasive polishing. Turned and polished bars tend to have a somewhat brighter finish than cold drawn bars.

Structural Tubing has a wide range of sizes. It has become a most important basic section for structural applications because of its adaptability to such varied uses. Structural tubing is an efficient structural member with many inherent advantages, including strength and lightness. In torsion it is capable of carrying a greater load than any other structural member of equal weight. Where there is uneven loading, rectangular sections may be used. Structural Steel Tubing is made from flat rolled basic oxygen steel, which is formed into a tubular shape and then welded by the electric resistance process. In this continuous welding process there is no loss of properties, and no irregularity that may be observed in the structure. Over the years, tests and service have demonstrated that the tube weld is as strong as the base metal.

Structural Tubing has a wide range of sizes. It has become a most important basic section for structural applications because of its adaptability to such varied uses. Structural tubing is an efficient structural member with many inherent advantages, including strength and lightness. In torsion it is capable of carrying a greater load than any other structural member of equal weight. Where there is uneven loading, rectangular sections may be used. Structural Steel Tubing is made from flat rolled basic oxygen steel, which is formed into a tubular shape and then welded by the electric resistance process. In this continuous welding process there is no loss of properties, and no irregularity that may be observed in the structure. Over the years, tests and service have demonstrated that the tube weld is as strong as the base metal.