In food, beverage, dairy and pharmaceutical facilities, the inside of the pipe matters as much as the outside. Product-contact piping must be smooth, crevice-free and cleanable to prevent bacterial harbourage. That is where orbital welding and hygienic design come in.
What is orbital welding?
Orbital welding is an automated TIG welding process in which the arc rotates mechanically around the pipe or tube. Because it is machine-controlled rather than hand-held, it produces highly consistent, repeatable, full-penetration welds with minimal internal bead - exactly what hygienic piping requires.
Why it matters for sanitary piping
Manual welds can leave internal roughness, discolouration or crevices where product residues and bacteria collect. Orbital welds are smooth and uniform inside, so the line can be cleaned in place and meets hygienic standards. We work to 3-A Sanitary and ASME BPE principles, using 316/316L tube with internal surface finishes of Ra <= 0.8 micron.
The full hygienic package
Sanitary piping is more than welding. It includes correct 316L material selection, borescope inspection of internal welds, pickling and passivation to restore the corrosion-resistant passive layer, and CIP (clean-in-place) compatible layout with tri-clamp fittings and hygienic valves for easy cleaning.
Where it is used
Food and beverage factories, dairies and bottling plants, breweries, central kitchens, and pharmaceutical and cosmetics facilities - anywhere product-contact piping must be provably clean.
Learn more about our food-grade & sanitary piping service, or read why we use 316L.
Planning a Food-Grade or Sanitary Line?
Our sanitary crews deliver orbital-welded, 316L hygienic piping with full documentation. Request a technical review.
Orbital Welding & Sanitary Piping FAQs
Hygienic piping questions for F&B and pharma projects in Qatar.
What is orbital welding used for?
Orbital welding is used for food-grade, sanitary and pharmaceutical piping where product-contact welds must be smooth, consistent and cleanable. Its automated, repeatable welds meet 3-A and ASME BPE hygienic requirements.
Why is 316L used for sanitary piping?
316L resists corrosion from cleaning chemicals and product acids, and its low carbon avoids weld sensitisation. Combined with a smooth Ra <= 0.8 micron internal finish, it gives a hygienic, cleanable surface.
What is passivation and why is it needed?
Passivation is a chemical treatment (after pickling) that restores the chromium-oxide passive layer on stainless steel, maximising corrosion resistance after fabrication and welding - important for hygienic, long-life piping.
Do you provide CIP-compatible sanitary piping in Qatar?
Yes - we design and install clean-in-place compatible sanitary systems with tri-clamp fittings and hygienic valves, orbital-welded and documented for food, beverage and pharma facilities.