★
Serving Dallas Fort Worth, Texas
★
Custom Fabrication Guide
Custom metal fabrication is what you order when the thing you need does not exist on a shelf — a driveway gate for an opening that is not a standard width, a stair to a mezzanine that was built before anyone thought about access, a handrail that has to follow a curve, a bracket that has to carry a real load in a space nobody designed for. It is mostly not welding. It is measuring, drawing, choosing material, cutting, fitting and finishing, and the welding happens somewhere in the middle. This guide explains how a fabrication project actually runs, what decides the cost, which materials and finishes suit Texas weather, and where a code, a permit or an engineer has to come into it.
What Gets Fabricated
Driveway, pedestrian and security gates, panels and posts, sized to the opening you actually have.
Stair rails, balcony and platform guardrails, grab rails — the category where codes bite hardest.
Steel stairs, mezzanine access, catwalks, loading platforms and equipment landings.
Beams, columns, lintels, moment connections — anything holding a building up. Engineer territory.
Equipment mounts, pipe supports, shelving, racking, machine guards and frames.
Table bases, fire pits, signage frames, planters, awnings — the things with no catalogue number.
People picture welding. In reality a fabrication project is six steps, and welding is one of them: measure the space as it exists rather than as it was drawn; design something that fits and does the job; select material — grade, section size, wall thickness; cut and prepare the parts; fit and weld; then finish, because bare steel in Texas does not stay bare steel for long.
That first step decides more than anything else. Openings are rarely square, slabs are rarely level, and posts are rarely plumb. A gate built to the nominal dimension of an opening that is 25mm wider at the top will bind or leave a gap, and no amount of good welding fixes it afterwards. This is why a fabricator who wants to come and measure is doing you a favour, not padding the job.
Gates are the most common custom fabrication request in DFW, and they fail in predictable ways: they sag, they drag, they bind against the post in summer, or the automation fights them. Almost all of that traces back to three decisions made before any steel was cut.
Two more that matter locally: ground clearance — DFW gets heavy downpours, and a gate set tight to a drive will jam on silt and debris — and thermal movement, because a long steel leaf in full Texas sun grows. Clearances that look generous in February are there for August. Examples of completed gate work are under projects.
This is the category where the rules are strictest, and for the obvious reason: these are the things people put their weight on. Stair geometry, rail heights, graspability, the gap a child could pass through, and the load a guardrail must resist are all covered by adopted building codes rather than preference.
Rather than quote figures that vary by code edition, jurisdiction and whether the building is residential or commercial, the honest guidance is this: the applicable requirements come from the code your city has adopted, and the authority is your local building inspection department. Commercial and public projects also bring accessibility requirements into play, and workplace guardrails fall under OSHA as well. A fabricator should be able to tell you which of those apply to your project before quoting — and should build to them, not around them.
Practically, that means three questions get asked early: is this residential or commercial?, is it interior or exterior?, and does it need to be inspected? The answers change the design, the material and the price. A rail that has to pass inspection is not the same product as one going round a private patio, and pretending otherwise helps nobody. See services for what is covered.
Three Things That Decide Cost
Curves, scrollwork, tight tolerances and matching an existing style all add hours before any steel is cut. A simple, well-proportioned design is genuinely cheaper.
Section size, wall thickness and grade drive both cost and lifespan. Steel prices move, which is why quotes carry a validity period.
Primer, paint, powder coating and hot-dip galvanising cost very different amounts and last very different lengths of time outdoors.
Structural work — beams, columns, lintels, load-bearing posts, anything that holds part of a building up — is a different category from everything above it on this page. It is not harder to weld. It is that the consequences of getting the design wrong are structural collapse, and the person who decides what size a beam should be is a licensed structural engineer, not a fabricator and not a contractor.
The normal sequence is: an engineer specifies the member, the connections and the weld requirements; a permit is obtained where one is required; the steel is fabricated to that specification; and the work is inspected. A fabricator’s job is to build exactly what was specified and to be able to show that they did. If anyone offers to size a structural beam for you without an engineer’s drawing, that is the signal to stop. Whether a particular job requires a permit, an engineer, or welding to a specific code is determined by your local authority — confirm it before work begins. [VERIFY — confirm which structural and code-governed work this business undertakes, and under what certification, before relying on this section for a specific project.]
Two choices decide how long a piece of fabricated steel lasts outdoors here, and neither of them is the welding: what it is made of, and what protects it. DFW is hard on steel — intense UV, wide temperature swings, and storm water that sits in any section with a place to collect.
Materials & Finishes At A Glance
One design detail worth insisting on regardless of material: anything hollow needs to drain. Box section and tube that collect rainwater rust from the inside out, and the failure is invisible until it is serious. Drain holes at the low points, and sealed ends where water cannot get in, are the difference between a gate that lasts a decade and one that looks fine while quietly going.
Knowing the sequence tells you what to expect and where the lead times sit — and it explains why nobody can quote a gate over the phone in thirty seconds.
From Idea To Installed
Site visit: the opening, the ground, the fixings and what the piece has to do. Nothing is assumed square.
A drawing, a material spec, a finish and a written scope. This is where changes are cheap.
Cut, prepare, fit and weld. Finishing may go off site for powder coat or galvanising.
Set posts or fixings, hang and align, adjust, and touch up any protection disturbed on site.
This part is genuinely jurisdiction-specific, and anybody who gives you a confident universal answer is guessing. What is reliable is the shape of it: each city in the metroplex adopts building codes and runs its own permitting and inspection, requirements differ between residential and commercial work, accessibility rules apply to public and many commercial projects, and workplace guardrails and platforms fall under OSHA in addition to the building code.
A practical rule of thumb:RedLine Welding takes on fabrication work across Dallas, Fort Worth, Arlington, Irving, Grand Prairie, Plano, Frisco, Garland, Richardson, McKinney, Carrollton and the surrounding metroplex — residential gates and rails, commercial stairs and platforms, and one-off pieces that do not exist anywhere else.
To get a useful quote quickly, send three things: rough dimensions, a photo of where it goes, and a picture of something in the style you like — a saved image is worth a page of description. If it is a stair or a rail, say whether it is residential or commercial and whether it will be inspected. Send those through the contact page, or see projects for finished examples.
What people ask before commissioning a gate, a rail or a one-off piece in DFW.
Four things set it: design complexity, material quantity and grade, the finish, and installation. Welding time is rarely the biggest line. A plain gate to a standard-ish opening and an ornate one to a sloping driveway are different projects entirely. Send dimensions and a photo and you will get a real number — there is more on how welding work is priced in our DFW welding cost guide.
The steelwork is usually the fast part. Lead time is driven by material availability and, more often, by finishing — powder coating and hot-dip galvanising both happen off site and add days. If a project has a deadline, say so at quote stage so the finish can be chosen with that in mind.
For small brackets and simple pieces, photos and dimensions are enough. For anything that has to fit an existing opening — gates, rails, stairs — a measure is worth doing, because openings are rarely square and slabs are rarely level. Building to a nominal dimension is how gates end up binding or leaving a gap.
Usually yes. Send close photos of the existing work along with a ruler or tape in shot for scale, and photos of the joints and the finish. Matching an old profile exactly is not always possible if the section is no longer made, but a close visual match nearly always is.
It depends on your city and on what the item is. Fences and gates on private property often do not need one, though height and setback can still be governed locally. Stairs, guardrails and handrails — particularly commercial, rented or public-facing — are commonly inspected. Anything load-bearing on a building needs an engineer. Call your city’s building inspection department before work starts; it is a short call.
Hot-dip galvanising gives the longest protection, particularly for posts set in ground and exposed structures, and it can be painted or powder coated over for appearance. Powder coating alone gives a hard, even, attractive finish. Paint over primer is the cheapest and the shortest-lived — plan on maintaining it. Whichever you choose, design hollow sections to drain.
Both, and most projects are a mix. Cutting, fitting and welding are frequently done at the location for things that have to fit what is already there — rails, platform edges, brackets, repairs to existing steelwork. Larger assemblies are usually better built where there is a flat floor and a bench, then brought and installed. Finishing that needs a booth or a galvanising bath always happens off site.
Yes, and it is worth having the same people do both — installation is where fit problems show up, and whoever built the piece can adjust it. Be aware that installation sometimes brings other trades with it: new gate posts may need concrete, and a stair may need a landing poured before anything steel arrives.
Often yes, and it is usually the cheaper answer. Sagging leaves can be re-braced, worn hinges replaced, cracked joints cut out and rebuilt, and posts straightened or re-set. The judgement point is corrosion: if the section has rusted thin in several places, repairing one area just moves the failure along. That is the moment to talk about replacement.
Yes. A sketch on paper, rough dimensions, a photo of the space and a saved picture of a style you like is plenty to begin a real conversation. Design gets firmed up before anything is cut, and that is exactly when changes are free. What is not useful is a description with no dimensions and no photo — nobody can quote that.
Rough dimensions, a photo of the space and a picture of the style you want is enough to get a real quote.
Custom fabrication is design work that happens to involve welding. The projects that last are the ones where someone measured the space as it really is, chose a section and a grade that suit the load and the weather, protected the steel properly, and designed the hollow parts to drain. Get those right and the welding is almost incidental; get them wrong and no weld quality will rescue it.
The other half of it is knowing where the boundaries are. Gates, brackets, one-offs and most fencing are straightforward. Stairs, handrails and guardrails carry people and are governed by the code your city has adopted. Anything holding a building up belongs to a licensed engineer. A fabricator who tells you clearly which of those three your project is, before quoting, is the one worth hiring.