ISO/TS 16949
ISO 9001
HOME
WHAT WE DO
METALS
REQUEST A QUOTE
EXCESS INVENTORY
CONTACT US
steel hot dipped galvanized - coil slitting
hot dipped galvanized
This is a process in which a protective coating of zinc and iron-zinc alloys is applied to steel by dipping into a bath of molten zinc. Most sheet steel is done on a continuous galvanizing line.
Regular spangle is coated on continuous lines to specific coating designations. During normal solidifications, regular spangles are the result of the unrestricted growth of zinc crystals.
Minimized spangle is the result of treating regular galvanized sheet during the zinc solidification to restrict the normal spangle formation. Product usually has a dull appearance not characterized by a high degree of uniformity and dissimilarity from coil to coil is not unusual.
Extra smooth is the result of skin passing coated galvanized sheet material to impart a higher degree of smoothness. It is usually supplied in a coating designation G-90 only and is used for exposed, critical surfaces that are to be painted. If fluting or stretcher strains are a hazard, extra smooth should be specified.
Designations and Weights of Zinc Coating
On Hot Dip Galvanized Sheet (a)
coating
minimum coating weight (c)
triple-spot testing single-spot testing
designation
g/m
oz/ft
g/m
oz/ft
G 235
G 210
G 185
G 165
G 140
G 115
G 90
G 60
G 01
A 60
A 40
A 01
717
640
564
503
427
351
275
183
No minimum
183
122
No Minimum
2.35
2.10
1.85
1.65
1.40
1.15
0.90
0.060
No minimum
0.60
0.40
No minimum
610
549
488
427
366
305
244
152
No minimum
152
91
No minimum
2.00
1.80
1.60
1.40
1.20
1.00
0.80
0.50
No minimum
0.50
0.30
No minimum
(a) From ASTM A525
(b) G, regular type coating; A, zinc-iron type of coating
(c) Total weight on
both sides of sheet per unit area of sheet
Aluminum
Brass
Copper
Clad Metals
Stainless Steel
Steel
Conversion Table
Edge Conditions
Tolerance Tables
Water Staining
Toll Processing
Quality Policy
Ask the Expert
Awards
Feedback Form
Memberships
Press
Quality Certifications
Employment
Alabama, Florida,Georgia,Illinois,Indiana,Michigan,Mississippi,Ohio,Pennsylvania,North Carolina,New Jersey,New York,South Carolina,Tennessee,Virginia,Wisconsin
Privacy Policy
Copyright © 2011 Almetals / All Rights Reserved.
SEO Consulting/Services by JC Whelan - Brighton Mi