hollow structural sections

Overview

The term Hollow Structural Sections (HSS) refers to high-strength welded steel tubing used as structural elements in buildings and other structures and a variety of manufactured products. It is produced in round, square and rectangular shapes and a broad range of sizes to the ASTM A500, A1085, and A1065 specifications.

Benefits of HSS

High Strength-to-Weight Ratio

HSS often is the most economical structural member due to its structural efficiencies. HSS have high radii of gyration about both axes providing superior compression performance and significant weight savings.

Aesthetic Appeal

HSS are often favored architecturally because of their smooth sides, rounded corners and closed sections making them an ideal choice when exposing the structure is desired.

Less Surface Area for Coatings

Rectangular (including square) HSS have approximately two-thirds the surface area of an open section of comparable capacity. This means less surface preparation, less painting material and labor and reduced cementitious fireproofing.

Closed Section

Closed sections are advantageous for resisting torsional loads. Additionally, where cleanliness is a requirement like in food processing and other clean facilities, HSS are a natural choice due to their minimal surfaces to collect dust and debris.

A1085

A newer specification providing enhanced performance for HSS

A1065

Large and custom HSS shapes

AISC 360-16

Limit State Tables to facilitate your transition from AISC 360-10

ASTM A500

The current market leader for HSS materials.

HSS Producers

The membership of the Steel Tube Institute’s HSS Committee represents the majority of North America’s producers.

Find a Producer

Thought Leadership

We keep you informed and ahead of the latest research, insights and trends in HSS.

Capability Tool

HSS

This tool was designed to help specifiers and those within the steel supply chain locate producers of specific sizes of hollow str…

EPD

HSS

On behalf of our Hollow Structural Sections (HSS) member producing companies, STI has developed an Environmental Product Declarati…

Manuals

HSS

To ensure designers the necessary technical resources for using HSS, we have created the HSS Design Guides that cover specificatio…

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