Galvanized Structural Steel Specification

There are three main standards that govern the hot dip galvanized steel and a handful of supporting specifications that design engineers and fabricators should become familiar with to promote a high quality coating and ensure their steel design is suitable for hot dip.

Galvanized structural steel specification.

Standard specification for steel structural tubing cold formed welded carbon zinc coated galvanized by the hot dip process a1063 a1063m 20 standard specification for steel sheet twin roll cast zinc coated galvanized by the hot dip process. The six material categories covered in astm a123 a123m include structural shapes strip and bar plate pipe and tubing wire and reinforcing bar. Commercial steel deep drawing steel and extra deep drawing steel are designations described in the astm specifications for steel sheet zinc coated galvanized or zinc iron alloy coated galvannealed by the hot dip process a653 a653m. Allied flo coat tube.

The specifications for the three most common types of galvanized tube and pipe are detailed below. Cold formed high frequency welded and hot dip galvanized. There are three main specifications astm a123 a153 and a767 governing the coating thickness adherence and finish for hot dip galvanized steel and a handful of supporting specifications referenced in these specifications. Hot dip galvanizing is done in accordance with long established astm specifications.

Tube shall be manufactured using steel conforming to the requirements of astm a1008 a1008m and a1011 a1011m with a typical minimum yield strength of 30 000 psi. The specification astm a123 a123m covers individual steel pieces as well as assemblies of various classes of material. There are certain specifications that have been developed for hot dip galvanizing in order to produce a high quality coating. Astm a123 a123m specification for zinc hot dip galvanized coatings on iron and steel products covers individual steel pieces as well as assemblies of various classes of material.

Astm a108 standard specification for steel bar carbon and alloy cold finished astm a123 a123m standard specification for zinc hot dip galvanized coatings on iron and steel products astm a143 a143m standard practice for safeguarding against embrittlement of hot dip galvanized structural steel products and procedure.