[header] How to weld underwater [title] Identify the site and material of the joint to be welded and clean it. [step] Most underwater welds involve steel, but metals may vary. [title] Prepare a chamber to place around the joint (each joint should have a separate chamber).
[step] Chambers range in size-some are large enough to fit several welder-divers, others are only small enough for the welding electrode. [title] Introduce gas into the chamber and pump out the water.