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C51 C51 Contractors

1,510 licensed contractors

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12 Towers Engineering And Construction

#986165 · General Engineering, General Building, C35, C51 · Los Angeles

21 Retrofit & Steel Inc

#1141855 · General Building, C51 · Carson

7 Designs Iron

#1052629 · C51 · Antioch

A

A - 1 Crane Service

#654290 · C51, C60 · Cottonwood

A&e Steel Inc

#1038341 · General Building, C51 · Pomona

A & G Machine Shop Inc

#878716 · C51 · Salinas

A & R Steel Fab Inc

#732321 · C51 · Norco

A A A General Welding Inc

#912790 · C51, C60 · South Gate

A A Iron Co

#970600 · C51 · Sylmar

A Absolute Construction Welding Inc

#1046933 · C51, C60 · Lakeside

Abc Metals Inc

#1087678 · C51 · San Francisco

A B S Manufacturers Inc

#613821 · C51 · San Jose

A B Steel Construction

#912861 · General Building, C51 · Santa Rosa

A B Welding Inc

#714869 · Boiler, Hot Water Heating, C51, C60 · Prather

A D Iron Work Inc

#1064078 · General Building, C51 · Sylmar

A F Fabricators

#1069114 · C51 · Pico Rivera

A M G 1983 Construction Corp

#971487 · General Building, C51 · West Hills

A Plus Steel Construction Inc

#994343 · C23, C51 · Vista

A R Steel Inc

#1143654 · C51 · Delano

A S A P Structual Steel

#955986 · C51 · Pasadena

A V C Construction Inc

#996877 · General Engineering, C51 · Bakersfield

A V Heritage Builders Inc

#904349 · General Engineering, General Building, C51 · Rosamond

A W I Builders Inc

#818478 · General Building, C10, C17, C23, C51 · Burbank

A W Manufacturing Specialist Inc

#928387 · C51 · Stockton

A Thru Z Consulting & Distributing Inc Dba A-z Steel Company

#1049782 · C51 · Tucson

A&s Structural Force Co

#1149385 · C51 · Newark

A&s Structural Steel Inc

#1148056 · C51 · Phelan

A4welding Structural Steel

#1071605 · C23, C51 · Norco

Aaf Steel Structural

#858004 · C23, C51 · Mission Viejo

Aaw Metalworks Inc

#905594 · C51 · Fresno

Able Iron Works

#701403 · C13, C23, C51 · Pomona

Able Steel Fabricators Inc

#505830 · C51 · Mesa

Abney Steel Erectors Inc

#743210 · C51 · Fresno

Accelerated Construction & Metal Llc

#990617 · General Engineering, General Building, C13, C51, Hazardous Substance Removal · Turlock

Accurate Steel

#1017166 · C51 · Anaheim

Ace Ornamental

#765133 · C23, C51 · Pomona

Ace Welding And Fabrication Inc

#991341 · C51, C60 · Oceanside

Acies Iron Works Llc

#1010793 · C51 · Bell

Action Ironworks

#722337 · C23, C51 · Wilton

Acufab Structural

#1113154 · C23, C51 · Gardena

Acw Steel

#800603 · C51, C60 · Richmond

Ad Metal Building Inc

#1148420 · C51 · San Bernardino

Adams & Smith Inc

#311967 · General Engineering, C51 · Lindon

Adams Iron Co Inc

#463461 · C23, C51 · Santa Ana

Adf International Inc Which Will Do Business In California As Adf

#1064060 · C51 · Great Falls

Adf Structural Steel Inc

#1007253 · C51 · Terrebonne

Advance Steel Tank Construction

#1109178 · Concrete, C51 · Wellington

Advance Welding Incorporated

#747545 · C51, C60 · San Pedro

Advanced Steel Fabrication Inc

#794692 · C51 · Salinas

Advanced Tower Services Llc

#1148382 · C51 · Albuquerque

Advanced Welding & Steel Inc

#1137384 · C51 · Grangeville

Advantage Products Inc

#809097 · C51 · Monterey

Afc Steel Fabricators & Erectors

#1074861 · C51 · Ennis

Agate Construction

#608480 · General Engineering, General Building, Concrete, C51 · Scottsdale

Agate Steel Inc

#952062 · C51 · Scottsdale

Aggressive Welding Services Incorporated

#841755 · C51 · Modesto

Agmj Construction Inc

#1109401 · General Building, C51 · Glendale

Agramon's Iron Works

#1076553 · C51 · Los Angeles

Ahlborn Fence & Steel Inc

#793504 · C13, C23, C51 · Santa Rosa

Ahlborn Structural Steel Inc

#854244 · C13, C23, C51 · Santa Rosa

Air Tight

#832746 · General Engineering, General Building, C10, C20, C36, C43, C51 · Arcata

Aj Claremont Structural Steel Fab Inc

#1137486 · C51 · Ontario

Aj Steel Erector Inc

#1148926 · C51 · Chino

Aj Steel Inc

#858726 · C51 · Chino

Ajm General Construction

#1035253 · General Engineering, General Building, C10, C34, C51, C60, Hazardous Substance Removal · Santa Rosa

Albert Iron Work

#1128468 · C51 · Sun Valley

Alcatraz Iron Inc

#1057911 · C51 · Los Angeles

Alchemy Iron Works

#1144684 · C51 · Riverside

Aldaz Steel Fab

#871568 · C51 · Moreno Valley

Alegre Machinery

#871787 · General Engineering, C51 · Tracy

All American Construction Solutions

#1047163 · General Engineering, General Building, C20, C51 · Chino

All American Ironworks

#1048280 · C13, C23, C51 · Helendale

All Around Steel Inc

#1104476 · C51 · San Diego

All Metal Construction

#815556 · C51 · Aptos

All Points Welding

#662082 · C51, C60 · Diamond Springs

All West Fabricators Inc

#722400 · C51 · Fremont

Allegro Steel Inc

#1050282 · C51 · Santa Monica

Allen Iron Works Inc

#565721 · General Building, C51 · Mammoth Lakes

Allen Steel

#566721 · C51 · Livermore

Alley's Welding Inc

#756723 · General Engineering, C23, C51 · Bakersfield

Alliance Industrial Group Inc

#845946 · C51 · Ridgefield

Allied Steel Co Inc

#164718 · C23, C51 · Riverside

Alpha Structural

#1064464 · C51 · San Francisco

Alphabet Steel Inc

#1108061 · C51 · Pacoima

Alpine Iron

#961817 · General Building, C51 · Grass Valley

Alpine Tahoe Builders Inc

#1111037 · General Building, C27, C36, C51 · Verdi

Alta Design & Build

#996887 · General Engineering, General Building, C27, C51 · La Canada

Aluminum Products Liberty Lake Llc

#1111910 · C51 · Liberty Lake

Alvarado Structural Steel

#1075347 · General Building, C51 · Daly City

Americal Builders And Inspection Services Inc

#646517 · General Building, C51 · La Verne

American Bull Metalworks Inc

#998070 · C51 · Pacoima

American Carports Inc

#879371 · C51 · Joshua

American Industries Inc

#1068721 · C51 · Billing

American Iron

#1061667 · C51, C60 · Ridgecrest

American Iron Designs Corporation

#1041418 · C23, C51 · Santa Ana

American Ironworks Manufacturing Inc

#756942 · General Building, C23, C51 · Pacoima

American Restore Inc

#976449 · General Building, Concrete, C10, C27, C33, C36, C39, C50, C51 · Huntington Beach

American Steel

#963982 · C51 · Anaheim

American Steel & Stairways Inc

#308745 · C23, C51 · Gilroy

American Strong Foundation

#1118425 · General Building, C51 · Los Angeles

American Welding & Fab And Dockworks

#815453 · C51, D21, D28 · Baldwin Park

Americon Manufacturing Inc Dba Americon Inc

#1051331 · C51 · Watsonville

Amfabsteel Inc

#829072 · C51 · Bernalillo

Ammco Ornamental Iron Inc

#538960 · C23, C51 · Hawthorne

Amo Steel Structure

#1077595 · C23, C51 · Santa Fe Springs

An Iron Works

#1124825 · C51 · Harbor City

Anco Iron & Construction Inc

#749293 · General Building, C51 · San Francisco

Anderson Bros Artistic Iron Co

#234910 · C23, C51 · Corona

Anderson Charnesky Structural Steel Incorporated

#483440 · C51 · Beaumont

Anmg Welding

#1110115 · C51, C60 · Lancaster

Anning - Johnson Company

#652825 · General Building, Insulation & Acoustical, Drywall, C15, C21, C35, C39, C51, D24, D41 · Hayward

Antelope Iron Inc

#520963 · General Building, C13, C23, C51, D28 · Citrus Heights

Antonio's Metal Works Inc

#1036533 · C23, C51 · El Cajon

Anvil Steel Corporation

#345052 · General Building, C23, C51 · Gardena

Anytime Welding Inc

#711184 · C17, C23, C51, C60 · San Jose

Apex Electric & Air

#825156 · General Engineering, General Building, C10, C20, C51 · San Francisco

Apex Integrators Inc

#891173 · General Engineering, C51 · Bakersfield

Apex Steel Inc

#1051065 · C51 · Chico

Arb Inc

#194079 · General Engineering, General Building, Boiler, Hot Water Heating, C16, C36, C51 · Lake Forest

Archangel Fabrication Structural Steel Service

#1099744 · General Building, C51 · Visalia

Arete Ironworks

#1127953 · C51 · Irvine

Arizona Skyline Steel Inc

#790298 · C51 · Gilbert

Arreola's Structural Steel

#1028192 · General Building, C51 · Los Angeles

Arrow Sign Co

#314794 · C45, C51, D07 · Oakland

Arrowhead Steel

#270209 · C51 · Bloomington

Artisan Steel

#894426 · C23, C51 · Sun Valley

Artist Universal Steel Inc

#1063601 · C51 · Chatsworth

Arvel Steel

#1018298 · C51 · Whittier

Asbury Steel Inc

#999599 · C51 · Spring Valley

Asc Fabricators Inc

#1097809 · General Building, C23, C51 · North Hollywood

Ashtonco Llc

#1058186 · General Building, C17, C23, C43, C51 · Piedmont

Asia General Contractors Inc

#932915 · General Building, C51 · Compton

Astro Investment Development Ltd

#1065731 · General Building, C51 · Los Angeles

Atlas Iron Works

#964621 · C23, C51 · Montebello

Atlas Ornamental Iron Works Inc

#730848 · C23, C51 · Huntington Park

Atlas Steel

#1051925 · C51, C60 · Lincoln

Atwater Metal Fabrication Inc

#1103811 · C51 · Atwater

Lloyd W Aubry Co Inc

#213261 · General Engineering, C51, D21 · Hayward

Avalos Enterprises Inc

#1133765 · C51, C60, D21 · Turlock

Ayala's Structural Welding & Steel Fabrication

#931871 · C51 · Perris

Michael Charles Ayers

#549443 · General Building, C51 · Orangevale

Aysa Structure Inc

#1004822 · C51 · La Puente

Azad Steel Inc

#1014887 · C51 · Burbank

Azi Steel Inc

#1001295 · C23, C51 · Canoga Park

Aztlan Ornamental Iron Fab

#471241 · C23, C51 · Stockton

Aztlan Steel Fabrication Inc

#1131539 · C51 · El Cajon

B

B & H Construction

#675188 · General Building, C51 · Lucerne Valley

B & L Ironworks Inc

#1091296 · C13, C51 · Sylmar

B&r Design Llc

#1101062 · C51 · Benicia

B & R Fabrication

#839510 · C51, D21 · Ventura

B & R Sheet Metal Inc

#485181 · C43, C51 · Eugene

B A P K O Metal Inc

#353005 · General Building, C23, C51 · Orange

B A S Engineering Inc

#884768 · C13, C51 · Rancho Cucamonga

Ba Steel & Iron Works Inc

#998832 · C51 · Alhambra

B B B Structural Steel Inc

#1076097 · C51 · Gardena

B E I Steel Inc

#844874 · C51 · San Francisco

B F Development

#924083 · General Building, C51 · Irvine

B F Steel Inc

#742057 · C51 · Harbor City

Bp Iron Inc

#1062836 · C51 · Chino

B S Fabrication

#936920 · C51 · Yreka

B S G Welding

#1003092 · C51, C60 · Lynwood

B T Mancini Co Inc

#229210 · General Building, C15, C39, C51, D10, D34 · Santa Clara

B W F Erectors Inc

#758410 · C51 · Inglewood

B W Structural Inc

#540362 · C51 · Norco

Fred M Bagatourian

#632520 · C23, C51 · Newport Beach

Bahnmiller Steel

#1100415 · C51 · Everett

Baja Construction Co Inc

#412390 · General Building, C51 · Martinez

Baja Steel Erectors Inc

#1108069 · C51 · Imperial Beach

Tracy Vaughn Ball

#582821 · General Building, C51 · Herald

Bambacigno Steel Company

#244141 · C51 · Modesto

Bandana Installation

#815460 · C51 · Elkhart

Bannon Construction Inc

#917823 · General Building, C23, C51 · San Francisco

Bare Steel Inc

#1013733 · C51 · Santee

Bari Iron Design

#939715 · C17, C23, C51 · Sunland

Robert S Barnes

#490442 · General Building, C10, C51 · La Habra

Anthony J Barro Iii Structural Steel

#1011805 · C51 · Ceres

Kevin J Barry Ironworks

#742590 · C51 · San Francisco

Bart Manufacturing Inc

#1023018 · C51, D21 · Santa Clara

Basic Metals Industries Llc

#984635 · C51 · Phoenix

Bay Area Steel Services

#958266 · C51 · Gilroy

Bay Structural Iron Works Inc

#1125170 · C51 · Antioch

Bayview Iron Works Inc

#671227 · C51 · San Bruno

Bc Designs

#788751 · General Building, C51 · Fairfield

Bcm Construction Company Inc

#737157 · General Engineering, General Building, Concrete, C39, C51 · Chico

Bear Flag Ironworks Llc

#1119272 · C51 · Pescadero

Bedrock Group Inc

#1012968 · General Engineering, General Building, C27, C51 · La Canada

Andrew Beem Steel Construction

#1064890 · C51 · San Luis Obispo

Begadon Welding & Fabrication

#1023381 · C51, C60 · Half Moon Bay

Bell Bros Steel Inc

#794046 · C51 · Riverside

Bell Erectors Inc

#1106880 · C51 · Beaumont

Ben Ash Iron Works Inc

#1014171 · C51 · Compton

Benchmark Steel Inc

#801334 · C51 · Hollister

Benold Construction Co Inc

#730340 · General Engineering, General Building, C27, C51, D34 · Escondido

Berger Steel Corporation

#975879 · C51 · Mc Clellan

Bern's Steel Fabrication

#1139286 · C51 · Bakersfield

Besteel Fabrication Inc

#777664 · C51 · Ontario

Betko Inc

#965305 · General Building, C51 · Huntington Beach

Beyond Steel Fabrication Llc

#1070638 · C51 · Mentone

Big Valley Metals

#826708 · C51 · West Sacramento

Bill And C J Steel Work

#832180 · C51 · Santa Paula

Black Iron Inc

#873103 · C51 · Healdsburg

Blacksmith Enterprises Inc

#1028718 · C23, C51 · Sparks

Blazing Structure Steel Inc

#997568 · C23, C51 · Riverside

Bline Steel Inc

#1116040 · C51 · Sacramento

Blue State Steel Inc

#920145 · C51, D34 · Torrance

Blue Steel Enterprise

#882396 · C51 · San Diego

Blunt Iron

#1090223 · C51 · Palmdale

Bob's Iron Inc

#552839 · C23, C51 · San Leandro

Bodiker Contracting Inc

#830767 · General Building, C51 · Poway

Boggs Equipment & Engineering Co

#730793 · General Engineering, C51 · Colusa

Michael G Bogh

#847103 · General Building, C13, C51 · Highland

Bold Steel Inc

#1030520 · C51 · Sunland

Border International Steel Co

#792815 · General Building, C51 · Newport Beach

Bpf Construction Inc

#1126216 · General Building, C51 · Modesto

Bradford Steel Inc

#461582 · General Building, C51 · Ivanhoe

Bragg Investment Company Inc

#505420 · General Engineering, C10, C51 · Long Beach

Steven A Braseny

#688547 · C23, C51 · Yorba Linda

Brightbill Welding Inc

#751750 · C51 · Anaheim

Brother Steel Inc

#1138558 · C51 · San Francisco

Brother's Ironworks Inc

#776184 · General Building, C23, C51 · Burbank

Brother's Steel Inc

#1069290 · C51 · Reseda

Bill Brown Construction Company

#684764 · General Engineering, General Building, Concrete, C21, C51 · San Jose

Brownco Construction Company Inc

#769921 · General Engineering, General Building, Concrete, C16, C21, C36, C51, D42, Hazardous Substance Removal · Anaheim

Bsk Steel Llc

#1140646 · C51 · Acampo

Bt Metals

#273749 · General Building, C51 · Eureka

Builders Modular Depot Inc

#1133865 · General Engineering, General Building, C51 · Los Angeles

Building Constuction & Steel Services

#824092 · General Building, C51 · Los Angeles

Buildwise Inc

#940688 · C23, C51 · San Diego

Blazer Burton

#964756 · C23, C51 · Morro Bay

Burtt Construction Services

#955030 · General Engineering, ASB, General Building, C10, C16, C36, C46, C50, C51, Hazardous Substance Removal · Orinda

Bwe Construction

#1024034 · General Engineering, C51 · Bakersfield

By Design Steel Services Inc

#1030444 · C51 · Colton