Heat Tint Removal
Clean blue and gold oxidation from TIG and orbital welds.
Food, BioTech & Pharmaceuticals
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Hygienic Stainless
Clean welds & interiors
Fields of Application
Finishing systems for food, biotech and pharmaceutical plant
Process vessels, pipework and tank interiors must meet strict hygiene standards — welds cleaned, surfaces passivated and finishes consistent enough for inspection and audit.
LUPFIGS supplies matched SUHNER BRUSHmax weld-cleaning systems, oil-free pneumatic tools and long-reach flexible-shaft drives for hygienic stainless work — helping fabricators and maintenance teams achieve clean welds and smooth interiors without contamination risk.
Industry Demands
What hygienic finishing requires
Every vessel weld and interior surface must support cleaning, passivation and regulatory inspection without compromise.
Clean WeldsRemove heat tint and oxidation for passivation-ready stainless joints
Passivation QualitySurface condition that supports effective passivation and corrosion resistance
Long-Reach AccessFlexible and extended tools for vessel interiors, nozzles and confined tank zones
Oil-Free EnvironmentsPneumatic and electric options suited to clean-room and food-grade areas
Inspection PrepUniform finishes that meet visual and documented surface standards
Typical Work Areas
Where our systems are used
From weld cleaning on pipe spools to deep vessel interiors, each zone needs tools matched to hygiene and access requirements.
01
Weld Cleaning & Passivation
BRUSHmax cleaning of stainless welds
Remove weld discoloration and prepare joints for passivation on pipework, tanks and process skids in food and pharma plant.
Passivation Prep
Surface condition ready for citric or nitric passivation processes.
Joint Refinement
Blend welds on visible and product-contact surfaces.
02
Vessel Interiors
Long-reach finishing inside tanks and vessels
Reactor shells, mixing vessels and storage tanks need smooth interiors reached through manways and limited openings.
Interior Grind
Remove weld bead and local defects on tank shells and heads.
Nozzle & Port Work
Finish around fittings, baffles and internal attachments.
Surface Uniformity
Consistent finish grade across large interior surfaces.
03
Oil-Free Environments
Finishing in clean and controlled areas
Food, biotech and pharmaceutical zones require tools and processes that minimise lubricant carry-over and contamination risk.
Oil-Free Pneumatics
Filtered air supply and suitable tool selection for clean areas.
Controlled Consumables
Abrasives matched to stainless without embedded contamination.
Process Documentation
Methods that support validation and audit requirements.
04
Inspection Prep
Surface finish ready for QA and regulatory review
Final blending, cleaning and visual uniformity before hydro test, CIP commissioning or client inspection.
Visual Standard
Uniform appearance on product-contact and visible welds.
Ra Target
Finish sequences aligned to specified roughness where required.
Handover Support
Documented methods for maintenance and future rework.
Recommended Systems
Tool platforms matched to hygienic work
Select the drive and abrasive combination that fits weld type, vessel access and environmental requirements.
Electric
Electric Tools / BRUSHmax
Weld cleaning and brushing systems for stainless passivation prep.
Air Tools
Pneumatic Tools
Oil-free compatible air tools for controlled production areas.
Consumables
Abrasives
Discs, belts and fine abrasives for stainless weld and surface work.
Flexible Drive
Flexible Shaft
Long-reach drives and handpieces for tank and vessel interiors.
Application Approach
Build a controlled hygienic finishing process
We help fabricators and maintenance teams define a clear sequence from weld cleaning through to inspection-ready surfaces.
01
Define Standard
Confirm finish grade, passivation method and inspection criteria.
02
Clean Welds
Remove heat tint and oxidation with BRUSHmax or matched abrasives.
03
Finish Interiors
Use long-reach tools for vessel shells, nozzles and attachments.
04
Passivate & Verify
Complete passivation and confirm surface condition meets spec.
05
Document & Train
Record methods, train operators and align consumables for repeat work.
Technical Resources
Continue with products and catalogues
Review the electric, pneumatic and flexible-shaft ranges most often specified for food, biotech and pharmaceutical applications.
Working on a food or pharma application?
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