Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


We need to hydro blast steel prior

We need to hydro blast steel prior

We need to hydro blast steel prior

We need to hydro blast steel prior to appling an epoxy primer. Do we need sand injection for adequate profile or will it stick to the steel with water blast only?  If sand injection is needed, what kind of grit, what size, and how much sand to use?

RE: We need to hydro blast steel prior

It would be beneficial to apply your Epoxy Primer on a surface that has a profile, to give a mechanical 'Anchor' to the coating. As you quite rightly state, Hydroblasting
( Or U.H.P. Jetting) does require Abrasive Injection to produce a surface profile. The type of abrasive is crucial to give a profile of given shape and depth. We use GMA Garnet, Australian Grade, this is a naturally occurring hard and very dense Inert Mineral, crushed to the grades suitable for giving the profile we require for the selected coatings.
Hope this helps,

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close