Inspection of Hot Dip Galvanized products
Galvanizing is the electrochemical process of providing Zinc coating to iron /Steel to prevent Corrosion and Rust.
This process of Zinc coating is widely used on Industrial and Domestic products on mass production considering the following benefits
Hot-dip galvanizing is one of the most economical, maintenance-free corrosion protection systems available. Like any other 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 specification requirements and compliance measurement techniques to make an accurate assessment.
Third-Party Inspection – Involve in the inspection of Galvanized products, can prepare the inspection Checklist considering the following (at least) – To deliver the sound inspection report on inspection of Galvanized products.
The Following Points have been covered in the context of the Inspection of Galvanizing products. Which will help the Third-Party Inspection Agency in India or Inspector who are into third party Inspection activities? To develop the Sound understanding and get prepared to deliver the third-party Inspection services and make the supplier and buyer happy to utilize the professional services of Third-Party Inspection Agency
Raw material required for galvanizing process & its compliances
Equipment used in Galvanizing process
What are the types of inspection carried on the Galvanized products or Samples?
|Sr No||Product||Minimum Value or Average Mass of Coating (g/m2)|
|1||Castings-grey iron, malleable iron||610|
|2||Fabricated steel articles: 5 mm thick and overUnder 5 mm, but not less 2 mmUnder 2 mm, but not less than 1.2 mm||610 460 340|
|3||Threaded work other than tubes and tube fittings: 10 mm dia andUnder 10 mm dia||300 270|
|No. of Units in the Lot||No. of Units to be Selected in a Sample||Acceptance No.|
|Up to 25||3||0|
|100001 and above||50||5|
What are inspection references specification for Galvanized products?
Benefits of Hot Dip Galvanizing
Different Appearances The appearance of the hot-dip galvanized coating can vary from piece to piece, and even section to section of the same piece. Common appearances for hot-dip galvanized steel immediately after galvanizing include bright and shiny, spangled, matte gray, and/or a combination of these. There are a number of reasons for the non-uniform appearance; however, it is important to note appearance has no bearing on the corrosion protection of the piece. Furthermore, in time, after exposure to the environment, all galvanized coatings will take on a uniform, matte gray appearance
Types of Defects in Galvanize process
Equipments used for inspection of Galvanized products.
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