If you work in construction or structural engineering, you have likely seen the term HSS steel in project specifications.
But many buyers still ask simple questions:
Is HSS the same as pipe?
Which sizes and grades should I choose?
This guide gives clear answers. It explains HSS steel from a practical point of view, so you can quickly decide what fits your project.
What is HSS Steel? HSS steel is a kind of hollow structure profile steel with high performance and high quality. With its unique structure and excellent performance, hss steel has been widely used in the engineering field, and gradually changing the face of engineering construction.
This paper will discuss the application and development of HSS steel pipe in modern engineering from the definition of HSS steel pipe, HSS steel pipe materials and a variety of shapes of pipes.
What is HSS Material? Meaning, Types, and Standards
HSS Steel Definition and HSS Pipe
When searching for HSS material, it is crucial to understand that “HSS” holds two completely different meanings in the steel industry depending on the application:
High-Speed Steel (Tool Steel): A high-carbon tool steel alloyed with tungsten, molybdenum, and chromium, primarily used for manufacturing cutting tools and drill bits.
Hollow Structural Sections (Structural Steel): A high-strength, cold-formed steel class used in construction, infrastructure, and mechanical applications.
As a leading industrial pipe supplier, PANDAPIPE specializes in the latter. In the context of modern construction and engineering, HSS material refers to Hollow Structural Sections—including square, rectangular, and circular steel tubes—that offer exceptional strength-to-weight ratios and aesthetic appeal.
PANDAPIPE’s structural HSS steel material is manufactured in strict compliance with international standards, ensuring reliable load-bearing performance for any heavy-duty project.
HSS Steel Material and Property
Steel HSS is a tool steel material containing high carbon, high tungsten, high molybdenum, high chromium and other alloying elements.
The most common metal materials for hollow section pipes are carbon steel (CS), stainless steel (SS), aluminum (Al) and copper (Cu). Core components: tungsten (5.5%-6.75%), molybdenum (4.5%-5.5%), chromium (3.8%-4.4%), vanadium (1.75%-2.2%), and other alloy elements.
HSS-Steel has high hardness, high red hardness, high wear resistance, good toughness and high corrosion resistance. These characteristics enable the project to maintain good structural stability under extreme conditions of high temperature and pressure. Conventional high-speed steel has a hardness of HRC58-62, while high-performance models can reach HRC63-65.
HSS Steel Grade Type
Below are some common high-speed steel grades and their applicable scenarios. High-speed steel is mainly used for tool manufacturing and differs from the HSS Pipe (Hollow Structure Section) produced by our company. For more information about HSS Pipe, please click the link below. If you have any questions, please feel free to contact us. Hollow Structure Section
HSS Steel- Pipe Shapes/ Size/ Specifications
Technical Specifications of Structural HSS Material
Choosing the right dimensions is essential for structural integrity. Below is the standard size chart for our high-quality HSS material. All of our structural hollow sections are precision-engineered to meet ASTM A500, EN 10219, and other global steel specifications.
HSS Steel- Circular Hollow Section(CHS) Chart
The diagram of circular hollow section usually includes the main specification parameters such as inside and outside diameter, wall thickness and so on.
Through the table provided by PANDAPIPE, you can clearly see the characteristics of different sizes of CHS, so as to select the appropriate steel pipe.
| DN | O.D. | W.T. | |||||||||||||||
| Inch | mm | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | Sth | XS | XXS | |
| 50 | 2″ | 60.3 | 1.65 | 2.77 | – | – | – | 3.91 | – | 5.54 | – | – | – | 8.74 | 3.91 | 5.54 | 11.07 |
| 65 | 2 1/2″ | 73 | 2.11 | 3.05 | – | – | – | 5.16 | – | 7.01 | – | – | – | 9.53 | 5.16 | 7.01 | 14.02 |
| 80 | 3″ | 88.9 | 2.11 | 3.05 | – | – | – | 5.49 | – | 7.62 | – | – | – | 11.13 | 5.49 | 7.52 | 15.24 |
| 90 | 3 1/2″ | 101.6 | 2.11 | 3.05 | – | – | – | 5.74 | – | 8.08 | – | – | – | – | 5.74 | 8.08 | – |
| 100 | 4″ | 114.3 | 2.11 | 3.05 | – | – | – | 6.02 | – | 8.58 | – | 11.13 | – | 13.49 | 6.02 | 8.56 | 17.12 |
| 125 | 5″ | 141.3 | 2.77 | 3.4 | – | – | – | 6.55 | – | 9.53 | – | 12.7 | – | 15.88 | 6.55 | 9.53 | 18.05 |
| 150 | 6″ | 168.3 | 2.77 | 3.4 | – | – | – | 7.11 | – | 10.97 | – | 14.27 | – | 18.26 | 7.11 | 10.97 | 21.95 |
| 200 | 8″ | 219.1 | 2.77 | 3.76 | – | 6.35 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 8.18 | 12.7 | 22.23 |
| 250 | 10″ | 273.1 | 3.4 | 4.19 | – | 6.35 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 9.27 | 12.7 | 25.4 |
| 300 | 12″ | 323.9 | 3.96 | 4.57 | – | 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 9.53 | 12.7 | 25.4 |
| 350 | 14″ | 355.5 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 9.53 | 12.7 | – |
| 400 | 16″ | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 12.7 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 9.53 | 12.7 | – |
| 450 | 18″ | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 14.27 | 19.05 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 | – | – | – |
| 500 | 20″ | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | – | – | – |
| 550 | 22″ | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | – | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | – | – | – |
| 600 | 24″ | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | – | – | – |
HSS Steel Rectangular Hollow Sections(RHS)
Rectangular Hollow Sections Pipe (RHS) is a kind of hollow steel pipe with rectangular cross-section, which shows better mechanical properties under pressure, bending moment and torque. By welding the steel plate into a rectangular cross-section shape, and then after grinding, painting and other subsequent processing to get the finished product.
HSS Steel Square Hollow Sections Pipe(SHS)
Square hollow steel pipe (SHS) is square, and the four corners are right angles. This makes the SHS more uniform in all directions when subjected to pressure, bending moments and torques, thus improving the overall structural stability.
HSS vs Steel Pipe
Many people confuse HSS with steel pipe. They look similar, but they are used differently.
| Feature | HSS Steel | Steel Pipe |
|---|---|---|
| Purpose | Structural support | Fluid transport |
| Standards | ASTM A500 / A1085 | ASTM A53 / API 5L |
| Shape | Square, rectangular, round | Mostly round |
| Design focus | Strength & load | Pressure & flow |
👉 Simple rule:
Use HSS for buildings and structures
Use pipe for oil, gas, and water
Summary: Why Choose PANDAPIPE's HSS Material?
Whether your project requires square, rectangular, or round profiles, selecting the right HSS material is the backbone of safe and efficient engineering. At PANDAPIPE, we provide certified structural steel tubing tailored to your specific loading requirements.
If you are looking for premium HSS material with competitive pricing and reliable global delivery, contact our engineering team today for a custom quote.
Looking for reliable HSS steel suppliers? Contact PANDAPIPE for sizes, pricing, and fast delivery.
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