SI-400 (H)

SuperClean 150 Plus

Gain Complete Control Over Acid Corrosion – SI-400 (H)

In modern pickling lines, uncontrolled acid attack means higher metal loss, more fumes and shorter bath life. SI-400 (H) acid inhibitor is engineered for stainless steel tube and pipe manufacturers who demand tight process control.

This SI-400 (H) acid corrosion inhibitor works in mixed acid systems based on hydrofluoric, nitric and sulphuric acid. It reduces metal dissolution, suppresses fumes and protects fixtures, tanks and coils during descaling and pickling.

Use SI-400 (H) metal pickling inhibitor to keep surfaces active for pickling, while safeguarding your assets and operators.

Why leading stainless steel tube and wire mills rely on SI-400 (H) industrial acid inhibitor:

  • Powerful Corrosion Control

SI-400 (H) acid inhibitor forms a protective film that limits base metal attack while allowing scale removal.

  • Multi-Acid Compatibility

Designed as an inhibitor for steel pickling lines using HF–nitric and HF–nitric–sulphuric mixtures.

  • Protection for Stainless Steel

Engineered as an inhibitor for stainless steel and high-alloy steels used in S.S. tubes, pipes and profiles.

  • Low Foaming, Smooth Operation

SI-400 (H) low foaming acid inhibitor helps maintain flow, spraying and rinsing performance.

  • High-Temperature Stability

Stable performance under typical pickling and descaling temperatures.

Use SI-400 (H) acid inhibitor for the pickling process as per the guidelines below. Always follow your internal safety, handling and process controls.

Parameter

Recommendation

Acid Systems

HF–nitric and HF–nitric–sulphuric mixtures used for stainless steel pickling and descaling.

Dosage (Fresh Bath)

Mix 0.1–0.3% SI-400 (H) acid inhibitor in the fresh acid bath and homogenise thoroughly.

Make-Up

Add SI-400 (H) to the bath under circulation before loading tubes, coils or components.

Top-Up Strategy

With every acid top-up, add SI-400 (H) in proportion to maintain inhibitor level in the bath.
Metals Protected Designed as an inhibitor for steel pickling and inhibitor for stainless steel tubes and fittings.

Pro Tip: Track bath iron load, acid strength and pickling time. Adjust SI-400 (H) acid corrosion inhibitor dosage within the 0.1–0.3% range to optimise corrosion protection, bath life and surface finish.

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