Adjustable steel supports for buildings have been widely used in the construction industry. They are columns made of steel. The height of the support can be adjusted by bolts on the upper part of the steel pipe, which plays a supporting role for the foundation. The adjustable steel support system has a wide range of applications and is a low-cost, convenient and fast formwork support system among various types of building formwork support systems. The design and processing of adjustable steel supports are very flexible. Adjustable steel supports with different steel pipe diameters, wall thicknesses, and telescopic heights can be processed and produced according to project needs, achieving maximum material savings. Adjustable steel supports are ideal replacement products for existing steel pipe fastener scaffolding and bowl-hook scaffolding wooden brackets as formwork supports.1. Reasonable force, high bearing capacity, can effectively reduce the number of adjustable steel supports, reduce construction costs, and the support rods are not restricted by fixed plane dimensions. It has strong versatility and can adapt to cast-in-place reinforced concrete floor formwork projects with different floor heights and different plate thicknesses; it can stand on its own without horizontal connection and has good stability. 2. Under the same formwork area conditions, the adjustable steel support consumes less steel than the cup-hook scaffolding and steel pipe scaffolding, which is only 30% of the cup-hook scaffolding and 20% of the steel pipe fastener scaffolding. Therefore, the vertical transportation volume of the tower crane is small, which can shorten the construction period by about 50% and improve work efficiency. 3. There are relatively few support rods on the formwork site, large operating space, smooth personnel passage and material handling, and easy site management. 4. After the formwork, steel support, and primary and secondary beams are removed, they can be concentrated on the unloading platform and transported vertically by the tower crane, or they can be transported by workers from the stairs. They are less restricted by machinery and have certain flexibility.