×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!

*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

quantity of sandblast abrasive

quantity of sandblast abrasive

quantity of sandblast abrasive

(OP)
How much abrasive in lb/square foot should I order to sandblast steel pipe in the field to SP 10 (near white) for an epoxy paint system.  Sandblasting of pipe spools will take place in a tent at the edge of the work level before erection.

I understand that a 20% allowance should be included for wind losses.

Application will be via an air gun.

RE: quantity of sandblast abrasive

1969grad   Are you blasting the inside or outside of the pipes and if inside  what lengths ?
What is the diameter of pipes   1" or 24" ?
Are they new steel ,  with or without millscale ?
You could take as a starting guess that 50 Kg will blast 2 squ mtr of rusty surface to a clean white metal ( SA 2 1/2 in UK)
but can double or half according to answers to above questions.  Additionally the operator has great effect on useage  and you must have at least 150 psi airpressure. Lower pressure can very greatly change useage.
But why go for this almost white finish. A good epoxy paint gives 10 / 15 years cover with a  " well dusted " surface which uses less shot and less time. Cheers C Man

RE: quantity of sandblast abrasive

(OP)
corrosionman:

1.  Sandblasting outside of pipe only.
2.  New pipe.  However, pipe is delivered via ocean freight so I am unsure of the surface condition when it actually gets on site.
3.  Pipe diameters range from 2" to 20" with some 30".  Actually there are several facilities.
4.  Site location is within 100 miles of the coast line.
5.  Sandblasting requirements are per the owner's specs.  Big international oil company so they are never wrong.

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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