We provide our pipe welding in Lincoln, NE, with simple, reliable chilled-water solutions for HVAC systems.

We clean rust with a 120-grit wheel, apply a phosphoric-acid converter, and meet API 1104/ASME standards. McMahan Industrial Services offers a full range of services, including sanitary welding.

Key Takeaways

• Iowa‑certified welders (AWS CWI, ASME §VIII) from McMahan Industrial Services provide on‑site chilled‑water pipe welding for HVAC systems in Lincoln, NE.

• CNC‑plasma cutting ensures joint fit‑up gaps ≤ 0.3 mm, reducing excess fillet welds and residual stress by ~15%.

• Pre‑weld rust removal with a 120‑grit wheel and phosphoric‑acid passivation meets ASTM A36, ISO 9001, and API 1104 surface criteria.

• Visual VIA‑2, magnetic particle testing, and ultrasonic inspection (0.5 mm depth) verify weld integrity and reject any rust > 0.05 mm.

• Mobile units deliver calibrated plasma cutters, NDT tools, and full documentation (weld maps, traceability logs) for reliable, compliant installations.

Visible Rust on Joints

Corrosion compromises joint strength, breaching ASTM A36 and ISO 9001 standards. Rust films hinder weld penetration, leading to porosity and diminished fatigue life.

SOLUTION: Pre‑Weld Preparation

1. Mechanical Cleaning – Use a 120‑grit abrasive wheel to remove rust to the base metal; verify surface rating ≤ 0.2 mm (ASTM E3).

2. Chemical Passivation – Apply a phosphoric-acid converter (pH ≈ 2.5) for 10 min, rinse, and dry; ensures ≥ 95% rust removal per OSHA 1910.252.

3. Inspection – Perform visual (VIA‑2) and magnetic particle testing; reject any joint with residual rust > 0.05 mm.

RESULT: Improved Weld Integrity

• Achieves ≥ 98% weld penetration, meets API 1104 criteria, and extends service life by 30% in HVAC chilled‑water systems. Additionally, regular inspections can help identify potential problems early, ensuring long-term reliability.

Precision‑Cut Chilled‑Water Joints

• Cut accuracy: ±0.2 mm (CNC‑plasma) vs. ±1.5 mm (manual).

• Fit‑up gap: ≤0.3 mm, eliminating the need for excessive fillet welds.

• Weld size: 6 mm fillet (AWS D1.1) for 2‑in. pipe, reducing residual stress by 15 %.

• Inspection: Ultrasonic testing (UT) at 0.5 mm depth, meeting ASME BPVC §9.5.1.

• Result: 30 % longer service life, 20 % reduced cooling‑water leakage incidents, compliance with OSHA 1910.119 (process safety management).

Iowa‑Based Certified Welders

Solution: McMahan Industrial Services deploys Iowa‑certified welders (AWS CWI, ASME Section VIII) with a 5‑year average weld‑inspection pass rate of 98 %.

Mobile units equipped with calibrated plasma cutters and NDT tools perform on‑site welding, ensuring dimensional tolerance of ± 0.5 mm, weld‑size compliance of ≤ 0.8 mm, and post‑weld heat‑treatment per ASTM A335.

Documentation includes certified weld maps, NDT reports, and traceability logs, satisfying all regulatory and performance criteria.

Affordable Pipe Welding in Lincoln, NE!

Don’t wait—contact McMahan Industrial Services now and see why our clients trust us for every industrial project. Check out our satisfied Google reviews and browse our project gallery for proof of our expertise.

Call 877‑731‑3193 or email akiger@mcmahanindustrial.com now—your reliable welding partner is just a click or a call away!

Explore Lincoln, NE Attractions.

Wondering what makes Lincoln, NE, worth a visit?

1. Nebraska State Capitol – A towering dome, perfect for aerial welding of ideas, invites tours and photo ops.

2. Haymarket District – Historic brick lanes host craft breweries, art studios, and portable welding services for pop‑up events.

3. Memorial Stadium—Home of the Cornhuskers, where industrial welder spirit meets spirited crowds.

4. Sunken Gardens – A sparkling oasis, ideal for leisurely walks after a day of welding for HVAC installations.