Galvanized Structural Steel Specification

Hot dip galvanizing is done in accordance with long established astm specifications.

Galvanized structural steel specification.

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. 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. 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.

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. The material categories covered in the specification include structural steel and plate strips and bars pipes and tubing and wires. Cover design practices repair and touch up and painting powder coating over galvanizing. 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. A fabrication can have more than one material category such as a frame assembly. 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 six material categories covered in astm a123 a123m include structural shapes strip and bar plate pipe and tubing wire and reinforcing bar.

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