Galvanized Structural Steel Specification

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.

Galvanized structural steel specification.

The specification astm a123 a123m covers individual steel pieces as well as assemblies of various classes of material. Cover design practices repair and touch up and painting powder coating over galvanizing. 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. A fabrication can have more than one material category such as a frame assembly.

The specifications for the three most common types of galvanized tube and pipe are detailed below. The six material categories covered in astm a123 a123m include structural shapes strip and bar plate pipe and tubing wire and reinforcing bar. 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. Hot dip galvanizing is done in accordance with long established astm specifications.

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. 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. Allied flo coat tube. There are certain specifications that have been developed for hot dip galvanizing in order to produce a high quality coating.

Cold formed high frequency welded and hot dip galvanized.