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American Hollow Sections are structural steel members manufactured with a closed cross-section. They are widely used where structural strength, rigidity and efficient section geometry are required for building frameworks, industrial structures, infrastructure and fabricated assemblies.
American Hollow Sections are commonly referred to as Hollow Structural Sections (HSS) in American structural steel practice. Depending on the geometry, HSS can include square, rectangular and circular sections.
The appropriate section is selected according to structural loading, section properties, dimensions, wall thickness, connection requirements, material grade and engineering design.
American Hollow Sections are commonly specified according to applicable ASTM material specifications and AISC structural requirements. The exact specification depends on the product, grade and project requirements.
At Moksh Tubes & Fittings LLP, we support American Hollow Section requirements based on customer drawings, technical specifications and project requirements. Customers can specify the required HSS type, dimensions, wall thickness, ASTM grade, length, quantity and applicable AISC requirements.
American Hollow Sections can also be used together with American Structural Angles, Channels, Beams and Columns to create complete steel frameworks and fabricated structural assemblies.
For an accurate quotation, customers can provide their required HSS profile, dimensions, wall thickness, material grade, length, quantity and applicable ASTM / AISC specification, along with project drawings or technical documentation where required.
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American Hollow Sections, commonly referred to as Hollow Structural Sections (HSS), are available in different square, rectangular and circular profiles, with varying outside dimensions, wall thicknesses, lengths and structural steel grades according to applicable ASTM material specifications, AISC requirements and project specifications.
| Category | Details |
|---|---|
| Product | American Hollow Sections / HSS |
| Types | Square HSS / Rectangular HSS / Circular HSS |
| Profile | Square / Rectangular / Circular Closed Section |
| Material | Carbon Steel / Structural Steel |
| Standards | Applicable ASTM Standards / AISC Requirements |
| Grades | As per applicable ASTM material specification |
| Outside Dimensions | Various standard sizes |
| Wall Thickness | As per selected section and specification |
| Length | Standard Lengths / Cut-to-Length |
| Surface | Mill Finish / As Specified |
| Supply Form | Individual Sections / Bundles |
| Customization | Size, thickness, length and grade as required |
| Applications | Construction, Industrial, Infrastructure, Fabrication & Engineering |
Square Hollow Structural Sections have equal outside dimensions on four sides and provide a symmetrical closed profile. They can be used for structural frames, supports, columns, trusses and fabricated steel structures where the specified section meets the engineering requirements.
Rectangular Hollow Structural Sections have different outside width and height dimensions. They provide flexibility for structural frameworks and fabricated assemblies where a rectangular profile is preferred.
Circular Hollow Structural Sections have a round closed profile and can be used for tubular structures, columns, supports, towers and other engineering applications where a circular section is specified.
The applicable ASTM material specification depends on the HSS product, material grade and project requirements. Chemical composition, mechanical properties and dimensional requirements should be confirmed against the applicable specification.
AISC requirements may be referenced for structural design, section properties and selection of American Hollow Structural Sections. The applicable project drawings and engineering specifications should determine the required AISC requirements.
American Hollow Sections can be specified according to:
American Hollow Sections can be considered in standard lengths or cut-to-length requirements, depending on product availability and customer specifications.
For an accurate quotation, customers should provide:
Moksh Tubes & Fittings LLP can support standard and project-based requirements for American Hollow Sections, subject to product availability and agreed specifications.
| Section | Outside Size (in) | Wall Thickness (in) | Weight (lb/ft) |
|---|---|---|---|
| HSS 1½ × 1½ × ⅛ | 1.500 × 1.500 | 0.125 | 2.04 |
| HSS 2 × 2 × ⅛ | 2.000 × 2.000 | 0.125 | 2.75 |
| HSS 2 × 2 × 3⁄16 | 2.000 × 2.000 | 0.188 | 3.98 |
| HSS 2½ × 2½ × ⅛ | 2.500 × 2.500 | 0.125 | 3.46 |
| HSS 2½ × 2½ × 3⁄16 | 2.500 × 2.500 | 0.188 | 5.07 |
| HSS 3 × 3 × ⅛ | 3.000 × 3.000 | 0.125 | 4.19 |
| HSS 3 × 3 × 3⁄16 | 3.000 × 3.000 | 0.188 | 6.16 |
| HSS 3 × 3 × ¼ | 3.000 × 3.000 | 0.250 | 8.04 |
| HSS 4 × 4 × ⅛ | 4.000 × 4.000 | 0.125 | 5.62 |
| HSS 4 × 4 × 3⁄16 | 4.000 × 4.000 | 0.188 | 8.33 |
| HSS 4 × 4 × ¼ | 4.000 × 4.000 | 0.250 | 10.86 |
| HSS 4 × 4 × ⅜ | 4.000 × 4.000 | 0.375 | 15.20 |
| HSS 5 × 5 × ¼ | 5.000 × 5.000 | 0.250 | 13.69 |
| HSS 5 × 5 × ⅜ | 5.000 × 5.000 | 0.375 | 19.22 |
| HSS 5 × 5 × ½ | 5.000 × 5.000 | 0.500 | 24.55 |
| HSS 6 × 6 × ¼ | 6.000 × 6.000 | 0.250 | 16.52 |
| HSS 6 × 6 × ⅜ | 6.000 × 6.000 | 0.375 | 23.24 |
| HSS 6 × 6 × ½ | 6.000 × 6.000 | 0.500 | 29.91 |
| HSS 8 × 8 × ¼ | 8.000 × 8.000 | 0.250 | 22.24 |
| HSS 8 × 8 × ⅜ | 8.000 × 8.000 | 0.375 | 31.26 |
| HSS 8 × 8 × ½ | 8.000 × 8.000 | 0.500 | 40.28 |
| HSS 8 × 8 × ⅝ | 8.000 × 8.000 | 0.625 | 49.04 |
| HSS 10 × 10 × ⅜ | 10.000 × 10.000 | 0.375 | 39.28 |
| HSS 10 × 10 × ½ | 10.000 × 10.000 | 0.500 | 50.70 |
| HSS 10 × 10 × ⅝ | 10.000 × 10.000 | 0.625 | 61.83 |
| HSS 12 × 12 × ½ | 12.000 × 12.000 | 0.500 | 61.13 |
| HSS 12 × 12 × ⅝ | 12.000 × 12.000 | 0.625 | 74.63 |
| HSS 12 × 12 × ¾ | 12.000 × 12.000 | 0.750 | 88.00 |
| HSS 16 × 16 × ½ | 16.000 × 16.000 | 0.500 | 82.03 |
| HSS 16 × 16 × ⅝ | 16.000 × 16.000 | 0.625 | 100.40 |
| HSS 16 × 16 × ¾ | 16.000 × 16.000 | 0.750 | 118.30 |
| Section | Outside Size (in) | Wall Thickness (in) | Weight (lb/ft) |
|---|---|---|---|
| HSS 2 × 1 × ⅛ | 2.000 × 1.000 | 0.125 | 2.04 |
| HSS 3 × 2 × ⅛ | 3.000 × 2.000 | 0.125 | 3.46 |
| HSS 3 × 2 × 3⁄16 | 3.000 × 2.000 | 0.188 | 5.07 |
| HSS 4 × 2 × ⅛ | 4.000 × 2.000 | 0.125 | 4.19 |
| HSS 4 × 2 × 3⁄16 | 4.000 × 2.000 | 0.188 | 6.16 |
| HSS 4 × 2 × ¼ | 4.000 × 2.000 | 0.250 | 8.04 |
| HSS 5 × 3 × ¼ | 5.000 × 3.000 | 0.250 | 10.86 |
| HSS 5 × 3 × ⅜ | 5.000 × 3.000 | 0.375 | 15.20 |
| HSS 6 × 3 × ¼ | 6.000 × 3.000 | 0.250 | 13.69 |
| HSS 6 × 3 × ⅜ | 6.000 × 3.000 | 0.375 | 19.22 |
| HSS 6 × 4 × ¼ | 6.000 × 4.000 | 0.250 | 16.52 |
| HSS 6 × 4 × ⅜ | 6.000 × 4.000 | 0.375 | 23.24 |
| HSS 6 × 4 × ½ | 6.000 × 4.000 | 0.500 | 29.91 |
| HSS 8 × 4 × ¼ | 8.000 × 4.000 | 0.250 | 22.24 |
| HSS 8 × 4 × ⅜ | 8.000 × 4.000 | 0.375 | 31.26 |
| HSS 8 × 4 × ½ | 8.000 × 4.000 | 0.500 | 40.28 |
| HSS 10 × 4 × ¼ | 10.000 × 4.000 | 0.250 | 27.96 |
| HSS 10 × 4 × ⅜ | 10.000 × 4.000 | 0.375 | 39.28 |
| HSS 10 × 4 × ½ | 10.000 × 4.000 | 0.500 | 50.70 |
| HSS 10 × 6 × ⅜ | 10.000 × 6.000 | 0.375 | 46.60 |
| HSS 10 × 6 × ½ | 10.000 × 6.000 | 0.500 | 60.27 |
| HSS 12 × 4 × ⅜ | 12.000 × 4.000 | 0.375 | 46.60 |
| HSS 12 × 4 × ½ | 12.000 × 4.000 | 0.500 | 60.27 |
| HSS 12 × 6 × ½ | 12.000 × 6.000 | 0.500 | 69.69 |
| HSS 12 × 6 × ⅝ | 12.000 × 6.000 | 0.625 | 85.12 |
| HSS 12 × 8 × ½ | 12.000 × 8.000 | 0.500 | 79.11 |
| HSS 12 × 8 × ⅝ | 12.000 × 8.000 | 0.625 | 96.74 |
| HSS 16 × 8 × ½ | 16.000 × 8.000 | 0.500 | 100.70 |
| HSS 16 × 8 × ⅝ | 16.000 × 8.000 | 0.625 | 123.50 |
| HSS 16 × 8 × ¾ | 16.000 × 8.000 | 0.750 | 145.90 |
| HSS 20 × 12 × ¾ | 20.000 × 12.000 | 0.750 | 208.00 |
| Section | Outside Diameter (in) | Wall Thickness (in) | Weight (lb/ft) |
|---|---|---|---|
| HSS 1.900 × 0.109 | 1.900 | 0.109 | 2.16 |
| HSS 1.900 × 0.145 | 1.900 | 0.145 | 2.85 |
| HSS 2.375 × 0.109 | 2.375 | 0.109 | 2.73 |
| HSS 2.375 × 0.154 | 2.375 | 0.154 | 3.81 |
| HSS 2.875 × 0.120 | 2.875 | 0.120 | 3.56 |
| HSS 2.875 × 0.203 | 2.875 | 0.203 | 5.94 |
| HSS 3.500 × 0.120 | 3.500 | 0.120 | 4.37 |
| HSS 3.500 × 0.216 | 3.500 | 0.216 | 7.74 |
| HSS 4.000 × 0.120 | 4.000 | 0.120 | 5.03 |
| HSS 4.000 × 0.237 | 4.000 | 0.237 | 9.75 |
| HSS 5.000 × 0.134 | 5.000 | 0.134 | 6.84 |
| HSS 5.000 × 0.258 | 5.000 | 0.258 | 12.85 |
| HSS 6.000 × 0.134 | 6.000 | 0.134 | 8.26 |
| HSS 6.000 × 0.280 | 6.000 | 0.280 | 16.90 |
| HSS 8.000 × 0.148 | 8.000 | 0.148 | 12.08 |
| HSS 8.000 × 0.322 | 8.000 | 0.322 | 25.66 |
| HSS 10.000 × 0.188 | 10.000 | 0.188 | 19.20 |
| HSS 10.000 × 0.365 | 10.000 | 0.365 | 36.60 |
| HSS 12.000 × 0.250 | 12.000 | 0.250 | 30.60 |
| HSS 12.000 × 0.500 | 12.000 | 0.500 | 59.80 |
| HSS 14.000 × 0.375 | 14.000 | 0.375 | 43.40 |
| HSS 14.000 × 0.500 | 14.000 | 0.500 | 57.50 |
| HSS 16.000 × 0.375 | 16.000 | 0.375 | 49.70 |
| HSS 16.000 × 0.500 | 16.000 | 0.500 | 65.90 |
| HSS 18.000 × 0.500 | 18.000 | 0.500 | 74.30 |
| HSS 20.000 × 0.500 | 20.000 | 0.500 | 82.80 |
| HSS 24.000 × 0.625 | 24.000 | 0.625 | 128.00 |
| Section Type | Common Size Range | Weight Range |
|---|---|---|
| Square HSS / SHS | 1½ × 1½ to 16 × 16 in | 2.04–118.3 lb/ft |
| Rectangular HSS / RHS | 2 × 1 to 20 × 12 in | 2.04–208 lb/ft |
| Round HSS / CHS | 1.900–24.000 in OD | 2.16–128 lb/ft |
American Hollow Sections, commonly referred to as Hollow Structural Sections (HSS), can be supplied in different structural steel grades according to applicable ASTM material specifications, AISC requirements and project specifications.
The selected grade depends on the required mechanical properties, structural loading, section dimensions, wall thickness, fabrication requirements and engineering design. At Moksh Tubes & Fittings LLP, American Hollow Sections can be sourced according to the customer's specified HSS profile, dimensions, wall thickness, grade, length, quantity and applicable ASTM / AISC requirements, subject to product availability.
| Specification | Material Type | Typical Requirement |
|---|---|---|
| ASTM A500 | Cold-Formed Welded Carbon Steel Structural Tubing | Square, rectangular and round HSS applications |
| ASTM A1085 | High-Strength Carbon Steel Structural Tubing | Structural HSS applications requiring specified strength and enhanced performance |
| ASTM A1065 | Large Diameter Cold-Formed Welded Structural Tubing | Large rectangular and square structural sections |
| Other ASTM Specifications | Structural Steel | As per project specification and requirement |
ASTM A500 covers cold-formed welded and seamless carbon steel structural tubing in round, square and rectangular shapes. It is commonly specified for HSS applications in structural construction and fabrication.
ASTM A1085 covers cold-formed welded carbon steel structural tubing in round, square and rectangular shapes and can be considered where the applicable project specification requires this material specification.
ASTM A1065 covers large diameter cold-formed welded structural tubing and may be considered for large square and rectangular structural HSS applications where specified.
The appropriate material specification and grade for an American Hollow Section should be selected based on:
Customers should specify the required HSS type, dimensions, wall thickness, ASTM specification, grade, length and quantity when submitting an enquiry.
Where required and agreed at the time of order, applicable material test certificates and supporting documentation can be provided according to the purchase order and project requirements.
American Hollow Sections, commonly known as Hollow Structural Sections (HSS), are widely used in construction, industrial structures, infrastructure, fabrication and engineering projects where closed-profile structural steel sections are required for framing, columns, supports and fabricated assemblies.
American Hollow Sections are commonly used in building projects for steel building frameworks, structural columns, structural frames, roof structures, supporting members and bracing systems.
HSS sections are suitable for industrial facilities where strong and rigid closed-profile structural members are required. Applications include factory structures, industrial buildings, manufacturing facilities, equipment support structures, platforms and steel frameworks.
Square and rectangular HSS can be incorporated into warehouse and industrial shed structures for structural frames, columns, roof-support systems, bracing members and fabricated steel frameworks.
American Hollow Sections can be used in infrastructure and civil engineering projects where the specified ASTM / AISC section meets the project requirements. Applications include infrastructure frameworks, supporting structures, elevated structures, platforms and engineering assemblies.
Circular HSS can be used in tubular structural applications where a round closed profile is specified. Applications include towers, tubular frameworks, structural supports, lattice-type structures and engineering structures.
HSS sections are widely used in fabricated steel structures and assemblies. Applications include frames, brackets, supports, base structures, structural assemblies and fabricated components.
American Hollow Sections can be incorporated into support frameworks for industrial machinery and equipment, subject to the required structural design and section properties.
American Hollow Sections are also used in engineering projects requiring square, rectangular or circular closed-profile structural steel sections.
The appropriate HSS type, dimensions, wall thickness and material specification should always be selected according to the structural design, loading conditions, section properties, applicable ASTM specification, AISC requirements and project specifications.
American Hollow Sections, commonly known as Hollow Structural Sections (HSS), are versatile closed-profile structural steel sections used for framing, columns, supports, bracing and fabricated assemblies across construction, industrial, infrastructure and engineering applications.
The appropriate HSS profile, dimensions, wall thickness and material specification should be selected according to the structural design, loading conditions, section properties, applicable ASTM specification, AISC requirements and project specifications.
American Hollow Sections, commonly known as Hollow Structural Sections (HSS), provide an efficient and versatile structural steel solution for construction, industrial structures, infrastructure, fabrication and engineering applications.
Closed-profile sections provide useful structural strength and rigidity when the appropriate section is selected according to engineering design.
Square HSS, Rectangular HSS and Circular HSS provide flexibility for different structural requirements.
The closed geometry provides a practical profile for columns, frames, supports and fabricated structural assemblies.
Suitable for buildings, warehouses, industrial structures, towers, platforms, infrastructure and general engineering applications.
HSS can be used as structural columns and vertical supporting members where the selected section meets the required design criteria.
HSS can be specified according to applicable ASTM material specifications such as ASTM A500, ASTM A1085 and ASTM A1065, subject to product and project requirements.
HSS section selection and structural application can be considered according to applicable AISC requirements and engineering design.
Available in different outside dimensions and wall thicknesses according to applicable standards and product requirements.
Square, rectangular and circular profiles allow engineers to select sections according to structural configuration and application requirements.
Suitable for common fabrication operations such as cutting, drilling, welding and assembly, subject to applicable specifications.
Requirements can be specified according to HSS type, dimensions, wall thickness, material specification, length and quantity.
Can be used with American Structural Angles, Channels, Beams and Columns to create complete steel frameworks.
Suitable for projects requiring structural HSS specified to ASTM / AISC requirements.
The appropriate HSS profile, dimensions, wall thickness and material specification should always be selected according to the structural design, loading conditions, section properties, applicable ASTM specification, AISC requirements and project specifications.
(Typical minimum values; values depend on ASTM grade and section type.)
| Standard / Grade | ASTM A500 Grade B | ASTM A500 Grade C | ASTM A1085/A1085M |
|---|---|---|---|
| Tensile Strength (MPa), Min. | 400 | 428 | 450 |
| Yield Strength (MPa), Min. | 317 | 345 | 345 |
| Elongation (%), Min. | 23 | 21 | 21 |
AISC lists A500 Grade B at 46 ksi (317 MPa) yield / 58 ksi (400 MPa) tensile for rectangular HSS, while Grade C is 50 ksi (345 MPa) / 62 ksi (428 MPa). ASTM A1085 uses a single 50 ksi (345 MPa) minimum yield and 65 ksi (450 MPa) minimum tensile strength for round, square and rectangular HSS.
Moksh Tubes & Fittings LLP supports customers looking for American Hollow Sections / HSS for construction, industrial, infrastructure, fabrication and engineering requirements. Our supply approach is based on the customer's required HSS profile, dimensions, wall thickness, material specification, length, quantity and applicable ASTM / AISC requirements.
American Hollow Sections, commonly known as Hollow Structural Sections (HSS), are closed-profile structural steel sections used in construction, industrial structures, infrastructure, fabrication and engineering applications.
The main profiles include Square HSS, Rectangular HSS and Circular HSS. The appropriate profile is selected according to structural design and project requirements.
Square HSS are commonly used for structural frames, columns, supports, trusses, bracing and fabricated steel structures where a symmetrical closed profile is required.
Rectangular HSS are used for structural frameworks, columns, supports, platforms, frames and fabricated assemblies where rectangular dimensions are preferred.
Circular HSS are commonly used for tubular structures, columns, towers, supports and engineering applications where a circular structural section is specified.
American Hollow Sections can be specified according to applicable ASTM material specifications and AISC requirements, depending on the product and project requirements.
Specifications such as ASTM A500, ASTM A1085 and ASTM A1065 may be considered according to the applicable HSS profile and project requirements. Exact specification availability should be confirmed at the time of enquiry.
HSS are available in different outside dimensions, diameters and wall thicknesses. Actual availability depends on the applicable specification and Moksh Tubes & Fittings LLP's current product range.
Yes. Standard and cut-to-length requirements can be considered depending on product availability and customer specifications.
Selection should consider the HSS profile, dimensions, wall thickness, loading conditions, section properties, connection requirements, material specification and applicable AISC requirements.
Yes. Moksh Tubes & Fittings LLP can support bulk and project-based requirements, subject to product availability and agreed specifications.
Customers should provide the HSS type, outside dimensions or diameter, wall thickness, ASTM specification, required length and quantity. Project drawings or technical specifications can also be shared.
Yes. HSS can be used with American Structural Angles, Channels, Beams and Columns to create complete steel frameworks and fabricated assemblies.
Yes. International enquiries for American Hollow Sections can be discussed based on the required HSS profile, ASTM specification, dimensions, quantity and delivery requirements.
Looking for American Hollow Sections / HSS for your construction, industrial, infrastructure or fabrication project?
Contact Moksh Tubes & Fittings LLP for American Hollow Section requirements based on your required HSS profile, dimensions, wall thickness, ASTM specification, length and quantity.
Share your project specifications, drawings or material requirements with our team to discuss the suitable American Hollow Sections for your application.
📞 Contact Moksh Tubes & Fittings LLP at +91 97695 84950 for product availability, technical specifications and quotation enquiries.