8525 Arjons Dr, Ste K · Mira Mesa, San Diego 92126 · Mon–Fri 9:30a–5:30p Mobile & in-shop welding · Serving all of San Diego County
(858) 305-9056 Get a Quote
Welding & fabrication · San Diego, CA · Est. 2014

Steel, stainless,
aluminum. Welded right.

From a cracked trailer hitch to a 150-gallon 316 stainless tank, Jsquared handles repairs, custom fabrication, automotive builds and CNC plasma cutting. In our Mira Mesa shop or fully mobile at your site.

Request a free quote See the work
TIG · MIG · Stick100% mobile rigSame-week turnaround on repairs4.7★ on Yelp
TIG weld bead on a stainless steel fitting, Jsquared shop
12Years in business
4.7★Yelp · 13 reviews
100%Mobile capable
46Job photos on Yelp
What we do

One shop. Every weld.

Jose Serrano, owner and lead fabricator, runs every job himself. Small repairs, short production runs and full custom builds all get the same prep, the same fit-up and the same clean bead.

Describe your job

Welding Repair

Security gates, trailers, hitches, gym equipment, patio furniture, brackets. If it broke, we fix it stronger than it was.

STEEL · STAINLESS · ALUMINUM · CAST

Custom Fabrication

Railings, tanks, frames, signage, enclosures and one-off pieces built from your sketch, photo or drawing.

DESIGN → CUT → WELD → FINISH

Automotive Fabrication

Exo cages, bumpers, roof racks, flatbed lift installs, exhaust and chassis repair. Built to take a beating off-road.

JEEP · TRUCK · OVERLAND · FLEET

CNC Plasma Cutting

Signs, brackets, gussets, art panels and production parts cut from DXF or a sketch. Tight tolerances, clean edges.

UP TO 1" STEEL · DXF / PDF / SKETCH

Stainless & Aluminum TIG

Sanitary tanks, schedule 40 pipe, NPT bungs on existing aluminum tanks, marine fittings. Purged, clean, pressure-tight.

316 / 304 SS · 5052 / 6061 AL

Mobile Welding

Full rig comes to your home, jobsite, yard or dock anywhere in San Diego County. No haul, no downtime.

GENERATOR · MIG / STICK / TIG ON-SITE
Inside the Jsquared shop in Mira Mesa, welding table and ornamental panels
The shop

8525 Arjons Dr, Ste K

A full fabrication bay in the Archstone business park off Miramar Rd: layout table, MIG and TIG machines, tube bender, chop saw and a service truck for mobile calls. Walk-ins and drop-offs welcome Mon–Fri, 9:30a to 5:30p.

Recent jobs

Out of the shop lately

Real jobs photographed by the shop: stainless TIG, structural frames, automotive and on-site mobile work.

Sanitary stainless flange, TIGStainless

Sanitary stainless flange, TIG

Schedule 40 stainless pipe fused to a cast flange with a back-purged TIG root and a clean rainbow heat tint. Pressure-tight the first time.

TIG · 304 SS · SCHEDULE 40 PIPE
Jeep bumper and rack buildAutomotive

Jeep bumper & rack build

Rear bumper with recovery points, tire carrier and roof rack, fabricated and fitted in the shop.

MIG · DOM TUBE · POWDER COAT
Steel basin and manifoldCustom fab

Steel basin and manifold

Plate basin with twin ports and a tube manifold, tacked square and fully welded from the layout sketch.

PLATE · MIG · LEAK TESTED
On-site security gate installMobile

On-site security gate install

Mobile rig at a customer's yard, hanging a new steel panel gate on an existing block wall.

MOBILE · SECURITY GATE · ON-SITE
Scroll railing panelsOrnamental

Scroll railing panels

Ornamental iron railing sections with forged scrollwork and collars, built on the shop table.

ORNAMENTAL IRON · RAILING
Tube steel frameStructural

Tube steel frame

Rectangular tube frame squared on the table beside the Thermal Arc MIG rig.

MIG · TUBE STEEL · FRAME
Boat trailer and bendingMarine

Boat trailer and bending

Trailer repair in the shop with stainless tube bent on the bench bender for a marine rail.

MARINE · TRAILER · TUBE BENDING
Flatbed repair, on locationMobile

Flatbed repair, on location

Service truck and chop saw set up at a commercial site for an after-hours flatbed repair.

MOBILE · FLEET · COMMERCIAL
Mobile welding

The shop comes to you.

Some jobs can't be moved: a gate hanging off its hinge, a trailer stuck in the yard, a liftgate on a truck that needs to be back in service tomorrow. Jsquared is 100% mobile across San Diego County with a generator-powered rig for MIG, stick and TIG.

Mira MesaPowayScripps RanchSorrento ValleyKearny MesaClairemontLa JollaDowntownChula VistaEscondidoOceansideEl Cajon
Jsquared service truck with welder at an on-site gate job
  • 01
    Call or text a photoSend a picture of the break and where it is. Most repairs get a ballpark the same day.
  • 02
    We roll outRig, grinder, metal stock and consumables on the truck. No second trip for parts.
  • 03
    Fixed on the spotWeld, grind, prime. You're back in service before we leave the driveway.
How a custom job runs

Sketch to finished steel

Talk it through

Bring a sketch, a photo or just the idea. We measure, pick the metal and the process, and give you a straight number.

Cut

Parts come off the CNC plasma table or the saw to the drawing. Fit-up is checked before a single tack.

Weld

TIG for stainless and aluminum, MIG for structural steel. Purged and ground where it matters.

Finish & deliver

Primer, paint or powder coat through our local coater, then install or pickup.

Reviews

What customers say

4.7 stars across 13 Yelp reviews and 12 more on Google. The common thread: fair price, fast answer, Jose does it himself.

Read on Yelp
★★★★★
"I have a locksmith company and often need a welder to prepare security gates for us. Jose at J Squared is our go-to welder and always does an excellent job. Responsive, reasonable."
Locksmith company · Commercial, Yelp
★★★★★
"Amazing experience. I came in to install a 200-watt solar panel on top of my PT Cruiser. Other shops wanted to charge me a fortune. Jose did it right and fair."
Solar bracket install · Yelp
★★★★★
"Jose is a straight-up skilled and down-to-earth guy. He fixed my weight lifting bench to perfection. He treats your stuff like it's his. Great service and affordable too."
Equipment repair · Google
Free quote

Tell us what needs built or fixed.

Text a photo for the fastest answer. For custom work, Jose will come measure on-site or meet you at the shop.

  • Call(858) 305-9056Call or text · Mon–Fri 9:30a–5:30p
  • Emailjsquaredweldandfab@gmail.com
  • Shop8525 Arjons Dr, Ste K
    San Diego, CA 92126Archstone business park, Mira Mesa
  • OwnerJose SerranoOwner / lead fabricator · since 2014
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