You could go (as suggested) to a fab/weld shop and have the "V" bar made, though that might be more money than you think. They will have to cut, grind and jig up the mental before tacking, welding and grinding again. Probably will need solid industrial pipe or heavy bar stock because tubing may not be strong enough in the long run. That is, if you plan on adding weight for heavy dipping. If you also plan on making a dipping stand, than that will be something else to consider.Make a rough blueprint of what you want, with measurements. May also depend on how many 1040 rods are burned in the process. Might want to go to a very small weld shop, even a blacksmith, and check out the going rate. If you cut everything to size before hand than it should not be too much money invested.
Could also rent a welder (with hood, gloves, torch, rods, etc.) and try it yourself if all the parts are pre cut. Actually welding just takes a little patience and practice. If not mechanically inclined, than just forget about it. Have a fab shop do it all for you.
Where I workout at, we have one set of "V" dipping bars that are made of wood. Two 2X6's hinged together at one end. The stand is three 4X4's based/attached (bolted) together. Had them for quite a few years and can handle some pretty big weight. Actually fits the hands fairly well. If you could do something like that you might be better off in the long run.
In fact a lot of our stuff is home made, one of the power racks for example. Good Luck.