Practical Guidlines for the Inspection & Repair of Hot Dip Galvanized Coatings

A

• Adhesion
• Aluminium - killed steels
• Ash deposits
• Ash entrapment

B

• Bolts (see fasteners)
• Blisters
• Bare spots

D

• Delamination (see flaking)
• Distortion

F

• Flaking
• Flux deposits

G

• Gravimetric Test

M

• Mechanical damage
• Metallographic examination

P

• Painting (see duplex)

R

• Reactive steels
• Repairs
• Rough coatings

S

• Surface Conditions

T

• Thickness testing
• Thickness and uniformity
• Touch marks

U

• Uniformity Testing

W

• Wet storage stain1
• Wet storage stain2

Z

• Zincfix
• Zinc metal spraying1
• Zinc metal spraying2
• Zinc splatter