scope:

This Standard specifies the requirements for the production and supply of cold-formed, electric resistance-welded, steel hollow sections used for structural purposes. It considers three strength grades, with or without impact properties, that are suitable for welding.

This Standard applies to structural hollow sections formed cold without subsequent heat treatment.

This Standard is intended for general structural and engineering applications. All grades specified in this Standard are suitable for-

(a) welding, in accordance with AS/NZS 1554, Parts 1, 2, 5 and 7; and

(b) fastening, as specified in AS 3990, AS 4100, AS/NZS 4600, AS 5100.6 and NZS 3404. The Standard does not cover-

(i) submerged arc-welded;

(ii) helically welded; or

(iii) U'ed and O'ed steel hollow sections.

Requirements for product conformity to this Standard are given in Appendix B.

Requirements for cold-bending of galvanized circular hollow sections are given in Appendix C. Guidelines to purchasers

NOTE: on requirements that should be specified by the purchaser and those that should or may be agreed on at the time of enquiry and order are given in Appendix A.