On-Site Structural Welding Services for Orange County, Riverside County & San Diego County
Code-Compliant Steel Welding and Moment Frame Welding for New Construction & Building Retrofits
California On-Site Welding is a highly experienced mobile welder serving Southern California since 1995. As acknowledged industry experts in all welding processes, we’re well known for our exceptional craftsmanship, and hold numerous licenses, including ASME Section IX and LA City Structural Certifications.
We offer a full range of professional welding services for Orange County, Riverside, and San Diego, including, but not limited to:
- Steel beam welding
- Moment frame welding
- Rebar welding
- Sheet metal welding
- Cast iron & wrought iron welding
- Steel and stainless steel welding
- Gate and fence welding
- Structural weld removal (air arc)
- TIG welding (Gas Tungsten Arc)
- MIG welding (Metal Inert Gas)
- Shielded Metal Arc Welding (SMAW)
- And moreā¦

24/7 Emergency Services (909) 208-2179
Trusted Mobile Welder for Southern California Businesses and Contractors
At California On-Site Welding, we understand the importance of meeting stringent California state building codes, especially when it relates to moment frame welding designed to prevent earthquake damage. We regularly work on large scale projects for construction companies, building contractors, and commercial businesses such as Home Depot, Lowe’s, aerospace companies, restaurants, and more. They trust us to deliver fast, efficient, and precision welding services at competitive prices. Whether you need steel welding for structural beam repair, rebar welding for a concrete foundation, or Air Arc weld removal for a building retrofit, you can rely on California On-Site Welding to deliver superior results, every time.
WHAT OUR CLIENTS ARE SAYING
Dave has welded my weekend warrior and my offshore fishing boat on structural repairs. His expertise and exceptional work keeps me as a returning client.

Call Now for a Competitive Quote on Licensed On-Site Welding Services in Orange County, Riverside County, and San Diego County
When you call on California On-Site Welding, we come to you fully equipped to handle nearly any size welding job, from a small gate repair to joining your construction crew on a multi-story build-out. Contact us today for a cost-effective quote. We serve most of Southern California, including Orange County, Riverside County, San Diego, and surrounding areas.
The Best Mobile Welding Services in Southern California
Riverside County
- Beaumont, CA
- Canyon Lake, CA
- Corona, CA
- Eastvale, CA
- Hemet, CA
- Jurupa Valley, CA
- Lake Elsinore, CA
- Menifee, CA
- Moreno Valley, CA
- Murrieta, CA
- Norco, CA
- Palm Desert, CA
- Palm Springs, CA
- Temecula, CA
- Wildomar, CA
San Bernardino County
- Apple Valley, CA
- Chino, CA
- Chino Hills, CA
- Colton, CA
- Fontana, CA
- Hesperia, CA
- Highland, CA
- Loma Linda, CA
- Montclair, CA
- Ontario, CA
- Rancho Cucamonga, CA
- Redlands, CA
- Rialto, CA
- San Bernardino, CA
- Upland, CA
San Diego County
- Carlsbad, CA
- Chula Vista, CA
- Coronado, CA
- Del Mar, CA
- El Cajon, CA
- Encinitas, CA
- Escondido, CA
- La Mesa, CA
- Lemon Grove, CA
- National City, CA
- Oceanside, CA
- Poway, CA
- San Marcos, CA
- Santee, CA
- Vista, CA
Orange County
- Aliso Viejo, CA
- Anaheim, CA
- Brea, CA
- Buena Park, CA
- Costa Mesa, CA
- Cypress, CA
- Dana Point, CA
- Fountain Valley, CA
- Fullerton, CA
- Garden Grove, CA
- Huntington Beach, CA
- Irvine, CA
- La Habra, CA
- La Palma, CA
- Mission Viejo, CA
Los Angeles County
- Arcadia, CA
- Bellflower, CA
- Burbank, CA
- Calabasas, CA
- Carson, CA
- Cerritos, CA
- Claremont, CA
- Compton, CA
- Diamond Bar, CA
- Downey, CA
- Huntington Park, CA
- Lancaster, CA
- Long Beach, CA
- Torrance, CA
- Whittier, CA
Contact Us
Thank you for your interest in our mobile welding company. For questions or comments about on-site welding, use the information below. We look forward to hearing from you soon.
Office Info
Emergency Services Hours: 24/7
Call Anytime
californiaonsitewelding@hotmail.com