How to Judge the Welds and Hardware on a Steel Gate
What a sound weld shows versus what it hides
A good weld bead in steel holds a uniform width, with no pinholes from porosity and no undercut groove melted into the base metal beside it. Stitch welds leave gaps between the members, and those gaps collect water and road salt the way a cracked driveway does. A fully sealed joint sheds water fast enough to keep the hollow picket frame from holding moisture inside.
In steel tube the gauge runs against intuition a higher gauge number means a thinner wall, so a lower gauge tube is heavier and stiffer and costs more because it uses more material. The right pick for a swing gate on a slope is a frame that resists flex without leaning on the operator. Aluminum saves weight but flexes more than steel under the same load.
How hinges earn their rating under load
Ball bearing hinges and hinges with grease fittings turn under load with less wear than plain pin and barrel hinges, but only if the hinge is mounted on a frame that does not twist first. A dual swing gate that binds on one side from settling will wear one hinge faster than the other, and swapping the pair for a higher rated set will not fix that.
Grinding welds smooth is mostly cosmetic and grinding too far thins the weld and weakens the joint. The spot that looks finished and bare under a future powder coat is the one to check twice. Weld spatter and sharp edges left under a coating create thin spots where rust starts before the first rain off the Agua Hedionda Lagoon fog line.
Coating layers you can count, not promises you cannot
Ask whether the gate will be galvanized after fabrication, and how the hollow members are vented and drained, and what that answer tells you about corrosion before the first salt season at Batiquitos Lagoon.
A written description of the coating system, layer by layer, makes it possible to compare builders on the same terms. One builder may cite a hot dip galvanizing bath after welding and call that the finish, while another lists zinc primer then a two part epoxy then a powder coat and nothing in between. The one with the steps written down is the one that can match a number to a spec and not to a sales sheet.
Checking a job in Carlsbad, CA without guessing
The marine layer rolls in off the coast and sits on hollow picket frames that do not drain, which is how a clean joint from the shop turns into a rusted throat six months later in Oceanside and Encinitas yards the same way. A vent hole drilled at the low point of each tube and a slope built into the frame run faster than a torch will, and a builder who plans ventilation and drainage before the first weld is a builder who has worked the coast.