Usually, yes. Here's why gates sag, what a welder can actually do about it, and how to tell — from a photo — whether yours is worth fixing.
A metal gate spends its whole life fighting physics. All of its weight hangs off two or three hinges on one side, every swing works those joints a little looser, and here in Vancouver and the Lower Mainland it does all that while being rained on for half the year. So when a driveway or yard gate starts dragging, clunking or refusing to latch, nothing has gone unusually wrong — it's just the predictable stuff. Most of it is weldable.
If the frame itself is sound, almost all of the failures above are repairable — and usually for a lot less than a new gate:
Honesty matters more than a sale here: some gates shouldn't be repaired. If the tubing is rusted through in multiple places — not surface rust, but flaking, holed, structural rot — you'd be paying to chase failures around the frame. The same goes for very light imported frames where the metal is too thin to take a good weld. In those cases replacement (or a new gate built properly the first time) is the better money, and we'll tell you so.
You don't need to diagnose any of this yourself. This is exactly what a couple of phone photos are for — it's usually enough for us to tell repair from replacement and give you a rough idea of the work involved.
What to photograph
Send them through the quote form — you can attach photos right on the page — and we'll get back to you with a free quote. Not sure what you're looking at? Send the photos anyway. That's the point. (Want the sixty-second version of this whole article? Try the Can It Be Welded? checker.)