NAICS 238120 · Structural Steel and Precast Concrete Contractors

Steel and welding contractors in Union City, CA

6 licensed steel and welding contractors · every license checked against the issuer's file

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380 listingsHow results are ordered
05

M a S Metals

Union City, CA · (510) 259-1426

CA-CSLB 912805 · C23 C51Steel and welding contractor
License activechecked Oct 24, 2026
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07

Dual Steel Inc

Hayward, CA · (510) 487-9628

CA-CSLB 1094171 · C51Steel and welding contractor
License activechecked Oct 24, 2026
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08

Ecm Steel Inc

Hayward, CA · (510) 755-9152

CA-CSLB 1033186 · C51Steel and welding contractor
License activechecked Oct 24, 2026
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10

Glazier Steel Inc

Hayward, CA · (510) 471-5300

CA-CSLB 672835 · B C51General contractorSteel and welding contractor
License activechecked Oct 24, 2026
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12

Kwan Wo Ironworks Inc

Hayward, CA · (510) 487-9628

CA-CSLB 643621 · B C51General contractorSteel and welding contractor
License activechecked Oct 24, 2026
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15

Shum Kanger Kin Chung

Hayward, CA · (510) 219-8675

CA-CSLB 1058738 · B C51General contractorSteel and welding contractor
License activechecked Oct 24, 2026
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19

A S T Scaffolding

Fremont, CA · (669) 237-5456

CA-CSLB 1043471 · B C9 +4General contractorDrywall, plaster and insulationConcrete contractor+2
License activechecked Oct 24, 2026
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