No. TWELVE Welding Company Logo

Shipping Container Welding Services

Mobile Welding Services … Equipment Repairs … Custom Metal Fabrication … Maintenance & Security … Welding Contractor … Commercial & Industrial Welding… Door & Window Security …

 

Mobile Welding Services … Equipment Repairs … Custom Metal Fabrication … Maintenance & Security … Welding Contractor … Commercial & Industrial Welding… Door & Window Security …

 

Shipping Container Welding Services2026-09-04T10:55:44-04:00
Shipping container modified with a custom doors and several window openings cut into the side walls, with the removed panels leaning against it.

Specialized Shipping Container Welding

Repurposed. Reinforced. Ready.

Bryan Forstner, President
No. Twelve Welding Company

Shipping Container Welding & Modifications

Shipping containers are built out of specialized Corten steel to withstand extreme marine environments. Modifying or repairing them requires more than a standard weld—it demands precise thermal control and structural integrity to prevent warping and ensure the enclosure remains completely weatherproof.

Whether you are a logistics manager with a fleet of damaged sea cans or a contractor launching a custom container modification project, No. Twelve Welding Company acts as a turnkey logistical asset. Our fully autonomous mobile welding rigs arrive site-ready with onboard power, capable of cutting, framing, and reinforcing your containers anywhere they sit—requiring zero infrastructure support from you.

We Don’t Just Modify Containers; We Engineer Solutions

Our Services:

  • Shipping Container Welding Services

  • Custom Container Modifications

  • On-Site Container Repairs

  • Lockbox & Security Installs

  • Structural Steel Modifications

  • Mobile Welding Contractor

  • See a video clip of a recent on-site modification

Shipping Container Door

service related FAQ’s

How do you handle quoting for custom or complex projects?2026-09-08T10:57:17-04:00

For standard repairs, we can often provide an estimate based on photos and a description. For complex fabrication or refractory work, we offer a consultation to review drawings or perform a site visit. This ensures our quote is accurate and accounts for all material and logistical requirements.

Do you provide mobile welding services outside Peterborough itself — in places like Havelock, Marmora, or Cobourg?2026-09-08T15:19:13-04:00

Yes — we regularly serve the surrounding area, including Havelock, Norwood, Marmora, Cobourg, Port Hope, and Colborne, bringing the same on-site mobile welding and repair services to those communities.

What specific high-heat alloys are you equipped to weld?2026-09-08T10:57:03-04:00

We specialize in precision welding for high-temperature environments, specifically working with 309L, 310, and 330 Stainless Steel, as well as Inconel. We understand the specific heat-input requirements and cooling rates necessary to maintain the thermal integrity of these alloys in kilns, coolers, and preheater towers.

Refractory Welding Division
High-Heat Alloy Specialists

  • Eliminating the Welding Bottleneck.

  • Production-Paced Welding.
  • Driving the Critical Path.
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