3-A Sanitary EHEDG Certified Design FDA Compliant Materials ASME B31.3
+974 4472 6271  ·  sales@aamtrongroup.com
Sanitary Process Piping · Qatar

Hygienic piping systems engineered to contamination-free standards.

We design, fabricate and install sanitary 316L stainless steel process lines for food, beverage, dairy and pharmaceutical facilities — welded to 3-A, EHEDG and FDA hygienic standards, with full material traceability.

≤0.6µm Ra internal finish
100% back-purged welds
6G ASME IX welders
0Sanitary lines erected
0Years of MEP heritage
0Hygienic standards met
0Weld back-purge coverage
What We Do

End-to-end hygienic piping capability

From direct mill sourcing to certified field installation — one accountable team controlling every weld, finish and document.

Orbital TIG Welding

Automated orbital welding with 100% back purging for smooth, crevice-free internal bores that resist bacterial harbourage.

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Process Line Installation

Full hygienic process line erection to 3-A, EHEDG and FDA standards — including CIP/SIP circuits and utility distribution.

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In-House Fabrication

Prefabricated spools, skids and manifolds built in controlled conditions for tighter tolerances and faster site handover.

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Electropolishing

Electropolished ASTM A270 tube validated to ≤0.6µm Ra — the mirror-smooth surface hygienic processing demands.

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Material Supply & Sourcing

Direct-mill 304, 316/316L, 321 and duplex supply with EN 10204 3.1 certification — no middleman markups.

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Testing & Documentation

Weld mapping, boroscopy, passivation, hydro-testing and a full turnover dossier ready for auditors and validation.

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Built to Code

The standards our work is held to

3-A Sanitary Standards EHEDG Hygienic Design FDA CFR 21 ASME B31.3 ASME Section IX (6G) AWS D1.6 API 1104 EN 10204 3.1
Engineered for Qatar

Why 316L is non-negotiable on the coast

Qatar's coastal, chloride-laden atmosphere is unforgiving. Standard 304 stainless can pit and fail where salt air meets warm, humid conditions — putting product purity and plant uptime at risk.

That's why every corrosive-service and outdoor line we install is specified in Grade 316/316L. Its molybdenum content delivers the chloride resistance a Gulf facility needs to stay contamination-free for decades, not years.

Our quality approach

What integrated control gives you

  • Direct mill sourcing — traceable material, no markup layers
  • In-house fabrication under controlled conditions
  • Certified 6G welders holding ASME Section IX
  • One dossier — one accountable partner
How We Deliver

A controlled path from spec to sign-off

Specify & Source

Grade selection, standards mapping and direct-mill procurement with 3.1 certs.

Fabricate

Orbital-welded spools and skids prefabbed to tight tolerance off-site.

Install & Purge

Field erection with 100% back-purged welds and weld-map traceability.

Test & Hand Over

Passivation, boroscopy, hydro-test and a full audit-ready turnover pack.

Project Spotlight

Dairy CIP process lines, Industrial Area

Over 3,200 metres of ASTM A270 electropolished tube sourced and erected with fully automated orbital TIG welding — delivering CIP-ready hygienic circuits validated for a demanding dairy operation.

See industries we serve
3,200mPiping erected
A270Electropolished tube
CIPReady circuits
The Detail

Technical capability at a glance

The specifications behind every hygienic line we build — matched to your process, standards and validation requirements.

Pipe & tube size½" to 12"+ (DN15–DN300 and above)
Stainless grades304 / 304L, 316 / 316L, 321, duplex
Tube standardsASTM A270 (sanitary), ASTM A312 / A213
Internal finish≤0.6 µm Ra electropolished; mill & mechanically polished options
WeldingAutomated orbital TIG, 100% back-purged; manual TIG by 6G welders
ConnectionsOrbital butt welds, tri-clamp, hygienic unions & fittings
TestingHydrostatic, boroscopy, dye-penetrant, radiography on request
PassivationChemical passivation to ASTM A967

What you receive at handover

A single, audit-ready turnover dossier your QA and validation teams can rely on.

  • Weld maps & isometrics — every joint traceable
  • Welder qualifications — ASME Section IX (6G)
  • Material traceability — EN 10204 3.1 mill certs
  • Surface-finish report — validated Ra readings
  • WPS / PQR — qualified welding procedures
  • Test & passivation certificates — pressure & chemical
Answers

Frequently asked questions

What is hygienic (sanitary) piping? +
Hygienic piping is a stainless steel process system designed and welded so that product-contact surfaces are smooth, crevice-free and fully drainable — preventing bacterial harbourage and enabling clean-in-place (CIP) sterilisation. It is essential in food, beverage, dairy and pharmaceutical production.
Which standards do you build to? +
Our hygienic installations follow 3-A Sanitary Standards, EHEDG hygienic design and FDA-compliant materials, with pressure piping to ASME B31.3, welder qualification to ASME Section IX (6G) and material traceability via EN 10204 3.1 mill certificates.
Why do you specify 316L stainless steel in Qatar? +
Qatar's coastal, chloride-rich environment accelerates pitting corrosion. Grade 316/316L contains molybdenum for superior chloride resistance, making it the correct choice for corrosive-service and outdoor hygienic lines in the Gulf.
Do you supply materials as well as install? +
Yes. We control the full supply chain — direct mill sourcing of 304, 316/316L, 321 and duplex, in-house fabrication, and certified field installation — so there are no middleman markups and full traceability from mill to weld.
What documentation do we receive at handover? +
A complete turnover dossier: weld maps and welder qualifications, EN 10204 3.1 material certs, surface-finish (Ra) validation, passivation records, boroscopy and hydro-test results — audit-ready for your QA and validation teams.

Planning a hygienic process facility?

Talk to a team that owns every weld, finish and certificate. Get a specification review and quote for your food, dairy, beverage or pharma project.

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