We provide fast, reliable on-site welding with precision and care. Our mobile welding services in Lincoln, NE, ensure durable fixes on remote sites. We offer a full range of services, including pipe welding, through McMahan Industrial Services. 

Key Takeaways

• McMahan Industrial Services offers on‑site mobile welding in Lincoln, NE, delivering portable welding stations for remote structural repairs.

• Certified welders use AWS A5.1 E7018 filler with 2‑pass root and fill, maintaining interpass temperatures ≤200 °C for sound joints.

• On‑site plasma cutting up to 25 mm thickness provides 0.5 mm kerf width and 1 mm positional accuracy, reducing labor by 40%.

• Free estimates are available via phone (877‑731‑3193) or email akiger@mcmahanindustrial.com; contact us for prompt structural fix services.

Cracked Weld Joint

A cracked weld joint compromises load‑bearing capacity and may violate ASTM E8/E8M tensile requirements (minimum 0.5 % elongation) and OSHA 1926.250 fire‑hazard standards.

Typical causes include excessive preheating, rapid cooling, and improper filler selection, leading to stress intensity factors (K_IC) exceeding 45 MPa·√m for low-carbon steel.

1. Inspection – Ultrasonic phased‑array scan to locate cracks >2 mm depth; record defect length (L) and width (W).

2. Preparation – Grind to sound metal, achieve a 1.5 mm bevel angle, and preheat to 150°C (±10°C).

3. Welding—Use AWS A5.1 E7018 filler, 2‑pass root and fill, and interpass temperature ≤200 °C.

4. Post‑Weld—Perform residual stress relief at 350°C for 1 hour; nondestructive test to confirm K_IC < 45 MPa·√m.

Additionally, using stainless steel in future projects can enhance durability and reduce maintenance costs.

On‑Site Laser‑Guided Welding

Remote structural repairs often suffer from misalignment, leading to rework, increased labor hours, and non‑conformity with ASTM E8/E8M tensile tolerances.

Laser‑guided welding stations mounted on McMahan’s mobile trailers provide real‑time positional feedback (±0.2 mm) using Class III laser trackers. Integrated with CNC‑controlled torch heads, the system maintains a 0.1 mm bead‑to‑bead consistency, complying with ISO 3834‑2 quality management.

Performance Metrics

• Alignment deviation reduced from 3 mm (manual) to <0.3 mm.

• Welding cycle time decreased 28 % on average.

• OSHA 1910.252 compliance achieved through automated shielding‑gas flow monitoring.

Implementation Steps

1. Site survey and laser reference point establishment.

2. Mount the laser tracker and calibrate to structural geometry.

3. Execute weld pass with CNC-guided torch; verify bead placement via onboard vision system.

On‑Site Plasma Cutting

Problem: Field repairs on steel structures often require precise cuts within tight tolerances, yet transporting heavy, stationary cutters incurs downtime and violates OSHA 1926.702 for equipment safety.

Solution: McMahan Industrial Services deploys a CNC‑controlled plasma table on a mobile trailer, delivering a 0.5 mm kerf width and 1 mm positional accuracy per ASTM A36 and ISO 9001 standards.

The system cuts up to 25 mm thickness at 2 m/min, reducing on-site labor by 40% and eliminating the need for secondary finishing. Integrated laser measurement ensures compliance with ASME B46.1, guaranteeing repeatable fit-up for handrail, staircase, and hatch installations.

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Full Mobile Welding Service Estimates in Lincoln, NE!

Ready to get your structural repairs done right—fast and on‑site? Call us today at 877‑731‑3193 or email akiger@mcmahanindustrial.com to schedule a free estimate. Our expert mobile welding team will travel to your Lincoln, NE, job site, assess the work, and deliver precise, reliable solutions on the spot.

See why our clients trust us by checking our Google reviews and explore past projects in our project gallery. When you’re ready, contact McMahan Industrial Services now—we’re standing by to keep your operations running smoothly.