Preface This is the fourth edition of CSA G164, Hot dip galvanizing of irregularly shaped articles. It supersedes the previous editions published in 1992, 1981, and 1965. When a general revision of the series was initiated, it was decided to prepare three new Standards, or series of Standards, covering wire, sheets, and irregularly shaped articles, respectively. Three new technical committees were then organized to deal with each of the three types of articles. This Standard defines the requirements for hot dip galvanizing of irregularly shaped articles intended or primarily for use in electrical and communication systems and the methods of testing for compliance. Annex E describes other processes of zinc applications for corrosion resistance. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 This Standard specifies the requirements for zinc coating (galvanizing) by the hot-dipping process on iron and steel products intended or primarily for use in electrical and communication systems, made from rolled, pressed, cast iron, or forged shapes such as structural sections, plates, bars, pipes, or sheets 1 mm thick and thicker. 1.2 This Standard applies to a) both unfabricated and fabricated products such as assembled steel products, structural steel fabrications, large hollow sections bent or welded before galvanizing, and wire work fabricated from uncoated steel wire; and b) steel forgings and iron castings that are to be galvanized separately or in batches. 1.3 This Standard does not apply to a) the continuous galvanizing of chain link fence fabric, wire, sheet, and strip; and b) pipe and conduit that are normally hot dip galvanized by a continuous or semi-continuous automatic process. 1.4 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.