How many welded seams are best for small industrial containers?

What happens when you manufacture Small Industrial Containers (SICs) with two-welded seams instead of three?

Small Shipping Containers

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Shear Strength and Welding: What You Need to Know - Red-D-Arc Red

Knowledge Base

Welding Oil Storage Tanks: Techniques and Considerations - Arc

The Beginner's Guide to Welding a Tee Joint (With Tips) Red-D-Arc

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3M Seam Weld/Gap Filler

Choosing a welding process for tubular profiles