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Pickling & Passivation at a Glance

ACT provides specialist pickling and passivation for stainless steel and alloy surfaces. We remove weld scale, heat tint, and surface contamination, restoring the chromium-oxide passive film that protects these materials in service. Using spray and immersion methods, we treat pipe spools, vessels, and fabricated assemblies — from new installation through to in-service remedial treatment.

Key Capabilities

Stainless Steel Treatment

Cleaning stainless steel surfaces after welding or repair to restore corrosion resistance.
ACID

HAZ Pickling & Descaling

Removing weld scale and heat tint from heat-affected zones ahead of passivation.
Cr₂O₃

Chemical Passivation

Promoting a stable chromium-oxide passive layer to restore corrosion resistance.

Vessel & Assembly Treatment

Treating pipe spools, vessels, and assemblies by spray or immersion as specified.

WHY CHOOSE

ACT for Pickling & Passivation

Stainless Steel Treatment Expertise

Specialist chemical treatment of stainless steel grades used across oil, gas and process facilities.

Controlled, Repeatable Processes

Documented procedures control chemical selection, dwell time and rinsing to ensure consistent quality.

Complete QA/QC Documentation

Treatment records, batch logs and inspection results provide full traceability at handover.

Standards-Aligned Procedures

Work carried out to applicable international standards and project specifications.

GCC Mobilisation Capability

Experienced teams mobilised across the UAE and GCC for new-build and maintenance scopes.

Integrated Service Delivery

Integrated with blasting, coatings, TSA and rope access under one accountable contract.

How We Deliver

Pickling & Passivation Projects

STEP 1

Plan

Review drawings, material specs, weld maps, and project requirements. Define scope, chemical selection, and HSE controls.

STEP 2

Clean

Pre-clean surfaces to remove heavy contamination, grease, and residues — critical to effective chemical treatment.

STEP 3

Treat

Apply chemicals by controlled spray or immersion, following defined dwell times for the specific material grade.

STEP 4

Rinse, Inspect & Document

Rinse and neutralise the treated surfaces, carry out visual and surface checks, document every step and issue the QA/QC package.

REFERENCE PROJECTS

Pickling & Passivation Projects

From passivation of process pipework to chemical treatment of oil and gas equipment — see how ACT delivers.

QUICK ANSWERS

Frequently Asked Questions

  • Austenitic, duplex, and super-duplex stainless steels, plus nickel alloys for oil & gas and petrochemical service.

  • Yes. Remedial pickling and passivation on installed pipework and weld seams without disassembly, subject to access.

  • A full QA/QC package - surface condition records, treatment batch logs, and rinsing confirmation for handover.

  • All work follows international standards, with client or project-specific procedures applied where required.

Talk to our Pickling & Passivation Team

ACT mobilises specialist pickling and passivation teams across the UAE and the wider GCC for new installations, fabrication works and remedial treatment. Send us the scope and material grades, and we will respond with the treatment procedure, chemical selection and the verification records issued on completion.

DIRECT LINE
+971 4 369 9666

ESTIMATION
contactus@actuae.ae

PRE-QUALIFICATION
Download capability statement

    Submit a project brief

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