We provide our pipe fitting in Des Moines, IA, as part of our double-wall pipe welding for hazardous materials. We perform grit-blasted surfaces, low-hydrogen E7018 welds, and precise GTAW with a 0.025 mm root gap.

McMahan Industrial Services offers a full range of services, including pipe fitting. Our mobile units deliver ultrasonic testing, meeting ASTM/ISO/API standards while reducing shutdown time.

Key Takeaways

• McMahan Industrial Services offers certified double‑wall pipe welding for hazardous materials in Des Moines, IA.

• They use GTAW with a 0.025 mm root‑gap tolerance and achieve a 99.8 % weld‑quality pass rate via ultrasonic NDT.

• Pre‑weld preparation includes grit blasting to Sa 2.5 and low‑hydrogen E7018 electrodes, followed by PWHT at 650 °F for 1 h per inch.

• Post‑weld verification ensures weld hardness ≤ 250 HV and defect detection ≤ 0.5 mm, meeting ASTM A53, ISO 3834‑2, and NACE MR0175 standards.

• Mobile field units provide on‑site welding, gas monitoring, and safety compliance (NFPA 51B, OSHA HAZWOPER) to reduce shutdown time by 35 %.

Corrosion at Weld Seams

Weld seam corrosion in double‑wall hazardous‑material pipes compromises containment integrity, leading to potential leaks and regulatory non‑compliance. Primary mechanisms include galvanic coupling between dissimilar metals, residual stress‑induced cracking, and moisture ingress at microporosity sites. ASTM A53, ISO 9001, and OSHA 29 CFR 1910.119 require weld‑metal hardness ≤ 250 HV and visual defect detection ≤ 0.5 mm.

Implement pre‑weld surface preparation (grit blasting to Sa 2.5), apply low‑hydrogen electrodes (E7018), and perform post‑weld heat treatment (PWHT) to 650 °F for 1 h per inch of thickness. Utilize ultrasonic testing (UT) and radiographic inspection (RT) to verify weld continuity, achieving less than 0.2 mm discontinuities.

Deploy corrosion‑resistant filler (AWS A5.9) and apply epoxy‑based coating per NACE MR0175, extending service life by ≥ 15 years under typical IA industrial conditions. Additionally, adhering to sanitary pipe design solutions ensures a robust infrastructure that minimizes the risk of corrosion-related failures.

Precision-Welded Double-Wall Joints

Industrial facilities in Des Moines require double‑wall pipe joints that prevent hazardous material leakage, yet conventional welding often fails to meet ASTM A53‑15 and OSHA 1910. 119 standards for pressure integrity and corrosion resistance.

McMahan Industrial Services employs precision‑welded double‑wall joints using GTAW with a 0.025 mm root‑gap tolerance, achieving a 99.8 % weld‑quality pass rate per NDT ultrasonic testing.

Mobile units perform in-field alignment within ±0.5 mm, reducing shutdown time by 35 % compared with shop-fabricated assemblies. Certified welders follow ISO 3834‑2 procedures, ensuring compliance with API 650 for hazardous material containment.

Certified Hazardous‑Material Welders

McMahan Industrial Services employs welders certified to AWS D1.1, ASME Section IX, and OSHA 1910.252 for hazardous‑material environments. All personnel complete NFPA 51B fire‑safety training and maintain OSHA HAZWOPER 40‑hour certification.

• Minimum 5 years' experience in double‑wall pipe welding.

• Pass the ASTM A123 corrosion‑resistance test with less than 5% weight loss.

• Achieve ISO 3834‑2 quality‑management compliance.

Mobile units equipped with certified welding helmets, gas‑monitoring sensors, and ISO‑certified plasma cutters ensure on‑site compliance with EPA 40 CFR Part 261 for hazardous material containment.

Affordable Pipe Fittings in Des Moines, Ia!

Ready to secure your project with reliable, affordable pipe fitting in Des Moines, IA? Call us today at 877‑731‑3193 or email akiger@mcmahanindustrial.com to discuss your needs. Our expert team will provide fast, on‑site service and precise double‑wall welding for hazardous materials.

Take the next step—contact McMahan Industrial Services now. See why our clients trust us by checking out our Google reviews and explore our successful projects in the project gallery.

Explore Des Moines, IA Attractions

Where should you start when exploring Des Moines? 

1. State Capitol – tours.

2. Riverwalk – bikes, views.

3. Art District – galleries.