Welcome to Moksh Tubes & Fittings LLP

Monday - Friday : 8:00 AM to 7:00 PM

American Hollow Sections

American Hollow Sections

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.

  • Square HSS / SHS – Square closed-profile sections with equal outside dimensions.
  • Rectangular HSS / RHS – Rectangular closed-profile sections with different outside width and height dimensions.
  • Circular HSS / CHS – Circular hollow sections with a round outside profile.

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.

Download American Hollow Sections Datasheet

Get the complete American Hollow Sections datasheet with chemical composition, mechanical properties, heat treatment details, and applications. Enter your email to receive the PDF instantly.

We respect your privacy. Your email will only be used to send the datasheet.

Specifications

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
ProductAmerican Hollow Sections / HSS
TypesSquare HSS / Rectangular HSS / Circular HSS
ProfileSquare / Rectangular / Circular Closed Section
MaterialCarbon Steel / Structural Steel
StandardsApplicable ASTM Standards / AISC Requirements
GradesAs per applicable ASTM material specification
Outside DimensionsVarious standard sizes
Wall ThicknessAs per selected section and specification
LengthStandard Lengths / Cut-to-Length
SurfaceMill Finish / As Specified
Supply FormIndividual Sections / Bundles
CustomizationSize, thickness, length and grade as required
ApplicationsConstruction, Industrial, Infrastructure, Fabrication & Engineering

Square HSS

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 HSS

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 HSS

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.

ASTM Specifications

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

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.

Section Dimensions

American Hollow Sections can be specified according to:

  • Section Type – Square / Rectangular / Circular HSS
  • Outside Dimensions
  • Wall Thickness
  • Material Grade
  • Required Length
  • Quantity
  • Applicable ASTM Specification
  • Applicable AISC Requirements

Length Availability

American Hollow Sections can be considered in standard lengths or cut-to-length requirements, depending on product availability and customer specifications.

Supply Requirements

For an accurate quotation, customers should provide:

  • HSS Type
  • Outside Dimensions
  • Wall Thickness
  • ASTM Material Grade
  • Required Length & Quantity
  • Applicable AISC Requirements
  • Project Specification, if applicable

Moksh Tubes & Fittings LLP can support standard and project-based requirements for American Hollow Sections, subject to product availability and agreed specifications.

Size & Weight Chart

Square HSS – SHS

Section Outside Size (in) Wall Thickness (in) Weight (lb/ft)
HSS 1½ × 1½ × ⅛1.500 × 1.5000.1252.04
HSS 2 × 2 × ⅛2.000 × 2.0000.1252.75
HSS 2 × 2 × 3⁄162.000 × 2.0000.1883.98
HSS 2½ × 2½ × ⅛2.500 × 2.5000.1253.46
HSS 2½ × 2½ × 3⁄162.500 × 2.5000.1885.07
HSS 3 × 3 × ⅛3.000 × 3.0000.1254.19
HSS 3 × 3 × 3⁄163.000 × 3.0000.1886.16
HSS 3 × 3 × ¼3.000 × 3.0000.2508.04
HSS 4 × 4 × ⅛4.000 × 4.0000.1255.62
HSS 4 × 4 × 3⁄164.000 × 4.0000.1888.33
HSS 4 × 4 × ¼4.000 × 4.0000.25010.86
HSS 4 × 4 × ⅜4.000 × 4.0000.37515.20
HSS 5 × 5 × ¼5.000 × 5.0000.25013.69
HSS 5 × 5 × ⅜5.000 × 5.0000.37519.22
HSS 5 × 5 × ½5.000 × 5.0000.50024.55
HSS 6 × 6 × ¼6.000 × 6.0000.25016.52
HSS 6 × 6 × ⅜6.000 × 6.0000.37523.24
HSS 6 × 6 × ½6.000 × 6.0000.50029.91
HSS 8 × 8 × ¼8.000 × 8.0000.25022.24
HSS 8 × 8 × ⅜8.000 × 8.0000.37531.26
HSS 8 × 8 × ½8.000 × 8.0000.50040.28
HSS 8 × 8 × ⅝8.000 × 8.0000.62549.04
HSS 10 × 10 × ⅜10.000 × 10.0000.37539.28
HSS 10 × 10 × ½10.000 × 10.0000.50050.70
HSS 10 × 10 × ⅝10.000 × 10.0000.62561.83
HSS 12 × 12 × ½12.000 × 12.0000.50061.13
HSS 12 × 12 × ⅝12.000 × 12.0000.62574.63
HSS 12 × 12 × ¾12.000 × 12.0000.75088.00
HSS 16 × 16 × ½16.000 × 16.0000.50082.03
HSS 16 × 16 × ⅝16.000 × 16.0000.625100.40
HSS 16 × 16 × ¾16.000 × 16.0000.750118.30

Rectangular HSS – RHS

Section Outside Size (in) Wall Thickness (in) Weight (lb/ft)
HSS 2 × 1 × ⅛2.000 × 1.0000.1252.04
HSS 3 × 2 × ⅛3.000 × 2.0000.1253.46
HSS 3 × 2 × 3⁄163.000 × 2.0000.1885.07
HSS 4 × 2 × ⅛4.000 × 2.0000.1254.19
HSS 4 × 2 × 3⁄164.000 × 2.0000.1886.16
HSS 4 × 2 × ¼4.000 × 2.0000.2508.04
HSS 5 × 3 × ¼5.000 × 3.0000.25010.86
HSS 5 × 3 × ⅜5.000 × 3.0000.37515.20
HSS 6 × 3 × ¼6.000 × 3.0000.25013.69
HSS 6 × 3 × ⅜6.000 × 3.0000.37519.22
HSS 6 × 4 × ¼6.000 × 4.0000.25016.52
HSS 6 × 4 × ⅜6.000 × 4.0000.37523.24
HSS 6 × 4 × ½6.000 × 4.0000.50029.91
HSS 8 × 4 × ¼8.000 × 4.0000.25022.24
HSS 8 × 4 × ⅜8.000 × 4.0000.37531.26
HSS 8 × 4 × ½8.000 × 4.0000.50040.28
HSS 10 × 4 × ¼10.000 × 4.0000.25027.96
HSS 10 × 4 × ⅜10.000 × 4.0000.37539.28
HSS 10 × 4 × ½10.000 × 4.0000.50050.70
HSS 10 × 6 × ⅜10.000 × 6.0000.37546.60
HSS 10 × 6 × ½10.000 × 6.0000.50060.27
HSS 12 × 4 × ⅜12.000 × 4.0000.37546.60
HSS 12 × 4 × ½12.000 × 4.0000.50060.27
HSS 12 × 6 × ½12.000 × 6.0000.50069.69
HSS 12 × 6 × ⅝12.000 × 6.0000.62585.12
HSS 12 × 8 × ½12.000 × 8.0000.50079.11
HSS 12 × 8 × ⅝12.000 × 8.0000.62596.74
HSS 16 × 8 × ½16.000 × 8.0000.500100.70
HSS 16 × 8 × ⅝16.000 × 8.0000.625123.50
HSS 16 × 8 × ¾16.000 × 8.0000.750145.90
HSS 20 × 12 × ¾20.000 × 12.0000.750208.00

Round HSS – CHS

Section Outside Diameter (in) Wall Thickness (in) Weight (lb/ft)
HSS 1.900 × 0.1091.9000.1092.16
HSS 1.900 × 0.1451.9000.1452.85
HSS 2.375 × 0.1092.3750.1092.73
HSS 2.375 × 0.1542.3750.1543.81
HSS 2.875 × 0.1202.8750.1203.56
HSS 2.875 × 0.2032.8750.2035.94
HSS 3.500 × 0.1203.5000.1204.37
HSS 3.500 × 0.2163.5000.2167.74
HSS 4.000 × 0.1204.0000.1205.03
HSS 4.000 × 0.2374.0000.2379.75
HSS 5.000 × 0.1345.0000.1346.84
HSS 5.000 × 0.2585.0000.25812.85
HSS 6.000 × 0.1346.0000.1348.26
HSS 6.000 × 0.2806.0000.28016.90
HSS 8.000 × 0.1488.0000.14812.08
HSS 8.000 × 0.3228.0000.32225.66
HSS 10.000 × 0.18810.0000.18819.20
HSS 10.000 × 0.36510.0000.36536.60
HSS 12.000 × 0.25012.0000.25030.60
HSS 12.000 × 0.50012.0000.50059.80
HSS 14.000 × 0.37514.0000.37543.40
HSS 14.000 × 0.50014.0000.50057.50
HSS 16.000 × 0.37516.0000.37549.70
HSS 16.000 × 0.50016.0000.50065.90
HSS 18.000 × 0.50018.0000.50074.30
HSS 20.000 × 0.50020.0000.50082.80
HSS 24.000 × 0.62524.0000.625128.00

American Hollow Sections – Quick Size & Weight Chart

Section Type Common Size Range Weight Range
Square HSS / SHS1½ × 1½ to 16 × 16 in2.04–118.3 lb/ft
Rectangular HSS / RHS2 × 1 to 20 × 12 in2.04–208 lb/ft
Round HSS / CHS1.900–24.000 in OD2.16–128 lb/ft

Grades Available

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.

Common ASTM HSS Material Specifications
Specification Material Type Typical Requirement
ASTM A500Cold-Formed Welded Carbon Steel Structural TubingSquare, rectangular and round HSS applications
ASTM A1085High-Strength Carbon Steel Structural TubingStructural HSS applications requiring specified strength and enhanced performance
ASTM A1065Large Diameter Cold-Formed Welded Structural TubingLarge rectangular and square structural sections
Other ASTM SpecificationsStructural SteelAs per project specification and requirement

ASTM A500

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

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

ASTM A1065 covers large diameter cold-formed welded structural tubing and may be considered for large square and rectangular structural HSS applications where specified.

Grade Selection

The appropriate material specification and grade for an American Hollow Section should be selected based on:

  • Required mechanical properties
  • Structural loading
  • Section dimensions
  • Wall thickness
  • Structural design
  • Fabrication requirements
  • Welding requirements
  • Applicable ASTM specification
  • AISC requirements
  • Project specification

Customers should specify the required HSS type, dimensions, wall thickness, ASTM specification, grade, length and quantity when submitting an enquiry.

Material Documentation

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.

Applications

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.

Building & Construction

American Hollow Sections are commonly used in building projects for steel building frameworks, structural columns, structural frames, roof structures, supporting members and bracing systems.

Industrial Structures

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.

Warehouses & Industrial Sheds

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.

Infrastructure Projects

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.

Towers & Tubular Structures

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.

Steel Fabrication

HSS sections are widely used in fabricated steel structures and assemblies. Applications include frames, brackets, supports, base structures, structural assemblies and fabricated components.

Machinery & Equipment Structures

American Hollow Sections can be incorporated into support frameworks for industrial machinery and equipment, subject to the required structural design and section properties.

General Engineering Applications

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.

Uses of American Hollow Sections

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.

Used for steel structural frameworks in commercial, industrial and building construction projects.
Suitable for structural columns and vertical supporting members where square, rectangular or circular HSS sections are specified.
Used in industrial sheds, warehouses and factory structures for structural frames and supporting systems.
Suitable for roof structures and bracing systems according to engineering design requirements.
Used for platforms, walkways and access structures in industrial and engineering facilities.
Suitable for machinery and equipment support structures where the selected HSS section meets the required design criteria.
Used in towers and tubular structures, particularly where Circular HSS sections are specified.
Suitable for infrastructure and civil engineering projects requiring ASTM / AISC specified structural sections.
Used for fabricated frames, brackets, supports and structural assemblies.
Can be combined with American Structural Angles, Channels, Beams and Columns to create complete steel frameworks.
Available in square, rectangular and circular profiles, providing flexibility for different structural and fabrication requirements.

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.

Advantages of American Hollow Sections

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.

Structural Strength & Rigidity

Closed-profile sections provide useful structural strength and rigidity when the appropriate section is selected according to engineering design.

Square, Rectangular & Circular Options

Square HSS, Rectangular HSS and Circular HSS provide flexibility for different structural requirements.

Efficient Structural Profile

The closed geometry provides a practical profile for columns, frames, supports and fabricated structural assemblies.

Wide Application Range

Suitable for buildings, warehouses, industrial structures, towers, platforms, infrastructure and general engineering applications.

Suitable for Structural Columns

HSS can be used as structural columns and vertical supporting members where the selected section meets the required design criteria.

ASTM Specification Options

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.

AISC-Based Selection

HSS section selection and structural application can be considered according to applicable AISC requirements and engineering design.

Different Size & Thickness Options

Available in different outside dimensions and wall thicknesses according to applicable standards and product requirements.

Design Flexibility

Square, rectangular and circular profiles allow engineers to select sections according to structural configuration and application requirements.

Fabrication Friendly

Suitable for common fabrication operations such as cutting, drilling, welding and assembly, subject to applicable specifications.

Project-Based Supply

Requirements can be specified according to HSS type, dimensions, wall thickness, material specification, length and quantity.

Compatible with Other American Sections

Can be used with American Structural Angles, Channels, Beams and Columns to create complete steel frameworks.

Domestic & International Applications

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.

Mechanical Properties – American Hollow Sections

(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.400428450
Yield Strength (MPa), Min.317345345
Elongation (%), Min.232121

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.

Why Choose Moksh Tubes & Fittings LLP?

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.

Project-Based Sourcing

American Hollow Sections can be sourced according to specific project requirements and technical specifications.

ASTM Specification Support

Product requirements can be aligned with the applicable ASTM material specification specified by the customer.

AISC Requirements

HSS section requirements can be considered according to applicable AISC project and engineering requirements.

Square, Rectangular & Circular HSS

Requirements for square, rectangular and circular hollow structural sections can be considered according to specification and product availability.

Wide Product Range

Different HSS dimensions, wall thicknesses and material specifications can be considered according to customer requirements.

Bulk Supply Capability

Suitable for contractors, fabricators, EPC companies, engineering companies and industrial buyers requiring larger quantities.

Specification-Based Supply

Product requirements can be matched with customer drawings, technical specifications and project documentation.

Technical Support

Assistance with HSS dimensions, wall thickness, material specifications, ASTM requirements and procurement requirements.

Custom Requirements

Specific HSS profiles, dimensions, wall thicknesses, material specifications, lengths and quantities can be discussed for project requirements.

Suitable for Industrial & Infrastructure Projects

Support for customers sourcing American Hollow Sections for construction, fabrication, industrial and infrastructure applications.

International Project Support

Suitable for customers requiring American-specification HSS for domestic and international projects.

Reliable Supply Coordination

Focus on product availability, order coordination and delivery requirements according to agreed specifications.

FAQ – American Hollow Sections

What are American Hollow Sections?

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.

What are the main types of American Hollow Sections?

The main profiles include Square HSS, Rectangular HSS and Circular HSS. The appropriate profile is selected according to structural design and project requirements.

What are Square HSS used for?

Square HSS are commonly used for structural frames, columns, supports, trusses, bracing and fabricated steel structures where a symmetrical closed profile is required.

What are Rectangular HSS used for?

Rectangular HSS are used for structural frameworks, columns, supports, platforms, frames and fabricated assemblies where rectangular dimensions are preferred.

What are Circular HSS used for?

Circular HSS are commonly used for tubular structures, columns, towers, supports and engineering applications where a circular structural section is specified.

Which standards apply to American Hollow Sections?

American Hollow Sections can be specified according to applicable ASTM material specifications and AISC requirements, depending on the product and project requirements.

Which ASTM specifications are available for HSS?

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.

What sizes of American Hollow Sections are available?

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.

Can American Hollow Sections be supplied in custom lengths?

Yes. Standard and cut-to-length requirements can be considered depending on product availability and customer specifications.

How do I select the right HSS section?

Selection should consider the HSS profile, dimensions, wall thickness, loading conditions, section properties, connection requirements, material specification and applicable AISC requirements.

Can Moksh Tubes & Fittings LLP supply American Hollow Sections in bulk?

Yes. Moksh Tubes & Fittings LLP can support bulk and project-based requirements, subject to product availability and agreed specifications.

What information is required for a quotation?

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.

Can American Hollow Sections be used with other American structural sections?

Yes. HSS can be used with American Structural Angles, Channels, Beams and Columns to create complete steel frameworks and fabricated assemblies.

Does Moksh Tubes & Fittings LLP support international enquiries?

Yes. International enquiries for American Hollow Sections can be discussed based on the required HSS profile, ASTM specification, dimensions, quantity and delivery requirements.

Request a Quote

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 Us Now

📞 Contact Moksh Tubes & Fittings LLP at +91 97695 84950 for product availability, technical specifications and quotation enquiries.

Call Now WhatsApp