The Complete Guide To Hollow Structural Sections (HSS)
Hollow Structural Section (HSS) steel pipes are construction steel pipes with high tensile strength and load-bearing applications. There are three broad types of HSS steel pipes: circular, rectangular, and square. HSS steel pipes are critical in structural applications due to their high strength-to-weight ratio. They see widespread use in infrastructural projects, industrial settings, and construction work.
What Is An HSS Steel Pipe?
The Hollow Structural Section steel pipe is a category of structural steel pipe. Compared to whole steel tubes, they have a hollow cross-section. According to different applications, HSS steel pipes are fashioned in round, square, and rectangular shapes. HSS steel pipes are primarily made of carbon steel according to the ASTM A500 specification. Due to their hollow cross-section, HSS pipes boast an enormous strength-to-weight ratio.
Common HSS Grades
ASTM A500
Most HSS steel pipes with wall thickness greater than 0.12 are made to the ASTM A500 grade. It is one of the most popular and trusted structural steel grades. It has two sub-categories, grade B and C. HSS tubes conforming to A500 are made through cold-forming and welding. They have excellent tensile and load-bearing properties.
A1085
HSS steel pipes conforming to ASTM A1085 standards come in square, rectangular, and round shapes. The A1085 standard is another carbon steel grade with high strength and low alloy concentration. It provides tighter tolerance limits than ASTM A500, making it critical for precise construction.
EN10210
EN10210 is a European standard steel grade. It is hot-finished steel primarily used for HSS steel pipes. It is highly suitable for applications requiring fine-grained structural steel that is unalloyed. HSS steel tubes falling under EN10210 can be shaped into square, rectangular, or round forms.
Applications Of Hollow Structural Section (HSS) Steel Pipes
Structural Elements and Machinery
The strength and design variability of HSS steel pipes greatly benefit construction applications. You can rely on HSS steel pipes for foundational columns, pillars, and scaffolding. Design elements employing exposed pipes are common. Heavy equipment components like frames, supports, and stands are also popular use cases.
Industrial Equipment
Heavy industry machinery relies on HSS steel pipes for their tensile strength and pressure rating. They compose hydraulic cylinders, machine bodies, support pillars, etc.
Oil and Gas
HSS steel pipes benefit both on-shore and offshore oil rigs. They are also used in heavy-duty tool racks, drilling equipment, platform construction, and other applications.
Advantages Of Hollow Structural Section
The primary benefits of HSS steel pipes are their high strength-to-weight ratio, robustness, durability, and variability. They are used in sectors like construction, manufacturing, and architecture. Compared to solid steel sections, they are considerably lighter. With the proper anti-corrosive coating, they offer as much shelf life as other solid steel components.
Conclusion
Hollow Structural Section steel pipes are invaluable building components across several industries. They are a popular choice among architects, builders, and manufacturers. As a structural constituent, they are strong, durable, and lightweight. It is important to note that structurally, HSS is no different from Tube-shaped steel. However, due to the rigorous manufacturing conditions required by ASTM, HSS pipes have emerged as one of the best building components.