What is Shotblasting? How does it benefit you?

About Shotblasting

There are times when material comes in for galvanizing that is contaminated with paint or grease, the only way to remove this prior to galvanizing would be to Shotblast the material. The contaminants need to be removed prior to galvanizing because it prevents the steel being pickled by the acid, if material isn’t acid pickled correctly then galvanizing will not take place.

There are a number of companies within the local area who can look after your requirements. Premier Galvanizing will collect from your shotblaster if required or for an additional transport cost we can collect from the customer, deliver to the shotblaster, re-collect once the shotblasting has been carried out, deliver to the galvanizing plant then deliver back to the customer

Shotblasting is also essential when trying to achieve a thicker galvanized coating. The British standard for galvanizing BS EN ISO 1461 states that if 140microns is required material should be shotblasted to sa2.5 using chilled iron grit.

By using Chilled iron grit when shot blasting you present the steel with a key which helps the zinc adhere to the steel. Chilled Iron Grit is a better option than bead blasting as it creates a better key and a rougher surface.

It is important to galvanize the material as soon as possible after shotblasting to maximise its effect on coating thickness.

Benefits of Shotblasting

  • Galvanizing - Outstanding corrosion resistance and long life

    As soon as the galvanised item leaves the zinc bath the surface reacts with the oxygen in the air to form a thin, impervious film of zinc oxide that has excellent adhesion and anti corrosion protection properties.
  • Galvanizing - Enhanced edge and corner protection

    Coatings are thicker than plastic-dipped or painted coatings, providing excellent coverage on sharp corners and angles.
  • Hot Dip Galvanizing - Highly economical

    Low initial cost combined with long life provides economical protection for long periods - often more than twenty years in hostile environments.
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We love feedback - Here is some of ours...

Rollin Fabrications have forged a solid working relationship with Premier Galvanizing since their introduction to ourselves in 2002.

Having exhausted our endeavours to find a local galvaniser that could provide a complete and effective service we now place our entire galvanising requirements with Premier. They clearly understand the importance of putting customer needs first and invest in employing experienced personnel. From shop floor operatives to senior management, all staff are competent in their roles and their understanding of team work is clearly demonstrated. All their staff are approachable, treat customers courteously and have sound knowledge of their trade.

Employing a night shift enables them to turn work around very quickly and most of our work is completed on a next day basis which is vital to our production needs. In a competitive market where quality and customer focus seem to suffer it is reassuring to know that Premier Galvanizing always deliver on their promise. We at Rollin Fabrications believe this level of service cannot be surpassed by any other national galvaniser. Perhaps it’s that extra mile they will always go to that makes them Premier?


Steve Edwardson Production Manager Rollin Fabrications