-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 8657

Pickling of Carbon Steel Pipe Lines


I would wish to have the detailed procedure for Pickling and Passivation of Carbon steel Pipe lines. The pipe that are pickled and passivated will be used in in a oil circulating unit

Sampathkumar Iyengar
Iyengar Engineers - Bangalore, Karnataka, India


We are looking forward to pickle a glycol tower with 7 trays. Please can I have the procedures for pickling and passivation.

Abiodun Akinola
- Warri, Delta State, Nigeria

Handbook of Corrosion Engineering
from Abe Books


July 15, 2009

I'm an operations engr. at a fertilizer company in Pakistan and these days I am involved in the pickling and passivation of carbon steel pipelines (will be used for steam service)...till now we have performed degreasing of the pipelines, I would like to share the procedure which is as follows
1.Air blowing for removing foreign particles
2.Flushing with potable water + leak test
3.Degreasing with Sodium Metasilicate + Tri Sodium Phosphate + Soap
4.Rinsing with demin. water
5.Pickling with 3% Citric Acid + ABF + Rodine 31A
7.Passivation with Citric acid + Sodium Nitrite + Sodium Carbonate
8.Final rinsing with slightly alkaline demin. water

Hope you find it helpful
Good Luck Mate!

Salman S. Ramay
- Sadiqabad, Pakistan

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.