
Specialized Shipping Container Welding
Repurposed. Reinforced. Ready.
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:

service related FAQ’s
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.
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.
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.
