We know breweries need gleaming, food‑grade welds that stay spotless, and we conduct our sanitary welding in Des Moines, IA. Our certified welders follow strict standards with TIG or orbital welding to ensure seamless, microbial‑free joints. McMahan Industrial Services offers a full range of services, including structural welding.

Key Takeaways

• Certified stainless‑steel welders in Des Moines perform TIG/orbital welds per ASTM A403‑19, ensuring food‑grade sanitary joints for breweries.

• Post‑weld passivation (ASTM A967‑20) and liquid‑penetrant testing (ASTM E165‑20) guarantee defect depths ≤ 0.1 mm and corrosion‑resistant welds.

• Low‑temperature brazing using 70 % Au‑30 % Ni filler (ASTM B163) preserves stainless‑steel metallurgy and meets ASME B31.3, ASTM A240, and FDA 21 CFR 177.1550.

• Free, no‑obligation quotes and on‑site certification documentation are available via 877‑731‑3193 or akiger@mcmahanindustrial.com.

Corrosion on Weld Seams

Corrosion on sanitary weld seams reduces hygienic integrity, promotes microbial growth, and can cause premature failure of food‑grade piping. Primary mechanisms include galvanic coupling between dissimilar metals, residual stress‑induced pitting, and inadequate post‑weld cleaning.

Solution
Apply ASTM A403‑19 A (stainless steel sanitary welds) with TIG or orbital welding, maintaining heat input < 10 kJ/inchto limit sensitization. Use 100 % nitrogen shieldingto prevent oxidation.

Perform post‑weld passivation per ASTM A967‑20, achieving a surface roughness Ra ≤ 0.2 µm. Inspect welds using ASTM E165‑20 liquid penetrant testing; accept only ≤ 0.1 mm defect depth.

Implement a corrosion- Allowance schedule of ≤ 0.5 mm per year for 304/316L alloys under 70 °F, 50 % RH conditions. Regular maintenance and proper training for weldersEnsure compliance with industry standards.

Brazed Piping With Stainless Steel

Stainless‑steel sanitary piping in breweries requires leak‑free, corrosion‑resistant joints that meet ASME B31.3, ASTM A240, and FDA 21 CFR 177.1550. Conventional welding can introduce heat‑affected zone (HAZ) contamination, compromising cleanability and product safety.

Brazing with 70 % Au‑30 % Ni filler (ASTM B163) provides a low‑temperature (≈ 950 °F) joint, preserving stainless‑steel metallurgy and eliminating HAZ defects.

McMahan Industrial Services employs calibrated plasma‑cut fittings, precision‑fit tolerances (±0.001 in), and controlled furnace atmospheres (≤ 5 ppm O₂) to achieve hermetic seals. Certified technicians verify joint integrity via helium leak testing (≤ 1 × 10⁻⁶ atm·cm³/s) and visual inspection per ISO 9001‑2015. This process delivers FDA‑compliant, sanitary‑grade piping with ≤ 0.5 % downtime for installation.

Stainless‑Steel Certified Welders

Commercial breweries require sanitary welds that meet FDA‑approved food‑grade standards, resist corrosion, and withstand repeated cleaning cycles. Non‑certified welders risk contamination, rework, and costly shutdowns.

Solution

McMahan Industrial Services employs certified stainless‑steel welders trained to ASTM A240, ISO 9001, and OSHA 1910.252. Welders perform TIG and SMAW on 304/316 grades, achieving ≤ 0.03 mm weld‑penetration variance and < 5 ppm particulate release. 

Affordable Sanitary Welding in Des Moines, IA!

Ready to upgrade your facility with expert sanitary welding in Des Moines, IA? McMahan Industrial Services delivers fast, reliable, and food‑grade solutions for commercial breweries and beyond.

Call us today at 877‑731‑3193 or email akiger@mcmahanindustrial.com to discuss your project and receive a free, no‑obligation quote.

Investigate our recent work in the project gallery and see why our customers trust us—check out our Google reviews.

Don’t wait—contact McMahan Industrial Services now and get your sanitary welding project started on schedule and on budget.

Explore Des Moines, IA, attractions.

Ever wondered what makes Des Moines a hidden gem for seekers?

• Des Moines Art Center: modern exhibits and bright murals

• Pappajohn Sculpture Park: outdoor art and playful benches

• Iowa State Fairgrounds: classic rides and tasty treats

• Riverside Trail, scenic bike path along the river

• Historic East Village, boutique shops, and lively cafés