Hot Rolled Structurals (HRS)


Hot Rolled Structurals

InfraBuild Steel manufactures and supplies an extensive range of Hot Rolled Structural Steel for the Australian and New Zealand construction market. Our steel is produced in a range of grades to Australian Standard AS/NZS 3679.1 (see below for sections and sizes). Our standard product for Hot Rolled Structural sections is 300PLUS*, which exceeds the requirements of AS/NZS 3679.1 Grade 300. Other grades available by inquiry include 300L0, 300S0, 300L15, 350, 350L0, 350S0, 350L15, 300S0 and 350S0. Products come in standard lengths, depending on the section size, from 6 metres up to 21 metres in 1.5 metre increments.

Test certificates are available for all our Hot Rolled Structural Steel products. Third party certification by the Australasian Certification Authority for Reinforcing and Structural Steels Ltd (ACRS) provides additional assurance that the certificate is from a manufacturer with the capability to consistently manufacture and supply compliant product.     

Higher vs Lower Minimum Yield Stress in Hot Rolled Structural Sections for Seismic Design

The ReL value for Hot Rolled sections from LIBERTY Primary Steel’s Whyalla Mill shall be determined using the following calculation from the ReH reported on Whyalla Test Certificates:

ReL = ReH– 5

Where ReL and ReH are in Megapascals

This is in accordance with Appendix F of AS/NZS 3679.1 Clause F2 (b).

Further details on these products can be found in the InfraBuild Steel Hot Rolled Structural Steel Products catalogue.


SectionSize rangeDescription
Universal Beams150UB to 610UBI-shaped sections
Universal Columns100UC to 310UCH-Shaped sections
Universal Bearing Piles (UBPs)200UBP, 310UBPHeavy H-Shaped sections
Parallel Flange Channels75PFC to 380PFCC-shaped sections
Tapered Flange Beams75TFB & 100TFB
Angles - Equal (EA)25x25 to 200x200L-shaped sections
Angles - Unequal (UA)65x50 to 150x100

*The standard product is 300PLUS S0 in New Zealand.

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