Standard and measurement method for zinc layer thickness of hot-dip galvanized bolts 1、 Definition of bolts A bolt is a type of fastener composed of a head and a screw, which needs to be matched with a nut to fasten and connect two parts with through holes. Bolts mainly serve as connections and fasteners, and their quality has a direct …

Inspection of HDGSimilar to any manufacturing process, hot-dip galvanized steel requires an inspection of the finished product to ensure compliance with applicable specifications. The inspection process requires a clear understanding of galvanizing specification requirements and measurement techniques to make an accurate assessment. Electronic reading of galvanized steel thicknessA key feature of hot-dip galvanized (HDG) products is longevity and decades of …

Inspection Steps – In order for the galvanizing to perform as intended, it is important that each step of the process be monitored, and the final product be inspected.  Inspection defined in ASTM A123, which would be reviewed in its entirety before inspecting the quality of galvanizing. The following is a summary of some of the inspections that should be performed …