EXHIBIT 21.1 Subsidiaries of the Registrant Set forth below is a listing, by name and jurisdiction of incorporation, of each corporation which is, as of the date of this Report, a subsidiary of the Registrant. Unless otherwise indicated, each such corporation is a 100% owned subsidiary of the Registrant. 1) Allied Metals, Inc., a Texas corporation. 2) Atlantic Pump & Equipment Company of Miami, Inc., a Florida corporation. 3) Atlantic Pump and Equipment Co. of Puerto Rico, a Puerto Rico corporation. 4) Atlantic Pump & Equipment Company of West Palm Beach, Inc., a Florida corporation. 5) Carolina Pump & Supply Corp., a Rhode Island corporation. 6) Cayesteel, Inc., a Georgia corporation. 7) CF Fluid Controls, Inc., a Texas corporation. 8) Chad Supply, Inc., a Florida corporation. 9) Coastal Wholesale, Inc., a Florida corporation. 10) Dominion Pipe & Supply Co., a Virginia corporation. 11) Dominion Pipe Fabricators, Incorporated, a Virginia corporation. 12) Douglas Leonhardt & Associates, Inc., a North Carolina corporation. 13) ELASCO Agency Sales, Inc., an Illinois corporation. 14) Elec-Tel Supply Company, a Georgia corporation. 15) Electric Laboratories and Sales Corporation, a Delaware corporation. 16) FES Merger Corp., Inc., a Florida corporation. 17) First National Fixture Corporation, a Kansas corporation. 18) Gayle Supply Company, Inc., an Alabama corporation. 19) Gilleland Concrete Products, Inc., a Georgia corporation. 20) GPEC, Inc., a Texas corporation. 21) H Venture Corp., a Florida corporation. 22) HHH, Inc., a Delaware corporation. 23) HSI Acquisition Corporation, an Ohio corporation. 24) HSI bestroute Investment, Inc., a Florida corporation. 25) HSI Corp., a Delaware corporation. 26) HSI Fusion Services, Inc., a Florida corporation. 27) Hughes Supply Foundation, Inc., a Florida corporation not-for-profit. 28) Hughes Supply FSC, Inc., a Barbados corporation. 29) Hughes Supply Management Services, Inc., a Delaware corporation. 30) Hughes Water & Sewer Company, a West Virginia corporation. 31) International Supply Company, a Texas corporation. 32) J & J, Inc., a Georgia corporation. 33) JuNo Industries, Inc., a Florida corporation. 34) Kamen Supply Company, Inc., a Kansas corporation. 35) L & T of Delaware, Inc., a Delaware corporation. 36) Merex Corporation, a Texas corporation. 37) Merex De Mexico, Sociedad Anonima De Capital Variable, a Mexico corporation, 75% owned. 38) Merex Diesel Power, Sociedad Anonima De Capital Variable, a Mexico corporation, 75% owned. 39) Metals Incorporated, an Oklahoma corporation. 40) Metals, Inc. - Gulf Coast Division, an Oklahoma corporation. 41) Mills & Lupton Supply Company, a Tennessee corporation. 42) Moore Electric Supply, Inc., a North Carolina corporation. 43) Mountain Country Supply, Inc., an Arizona corporation. 44) Olander & Brophy, Incorporated, a Pennsylvania corporation. 45) One Stop Supply, Inc., a Tennessee corporation. 46) Paine Supply of Jackson, Inc., a Mississippi corporation. 47) Palm Pool Products, Inc., a Michigan corporation. 48) Panhandle Pipe & Supply Co., Inc., a West Virginia corporation. 49) Port City Electrical Supply, Inc., a Georgia corporation. 50) R & G Plumbing Supply, Inc., an Alabama corporation. 51) Reaction Supply Corporation, a California corporation. 52) San Antonio Plumbing Distributors, Inc., a Texas corporation. 53) Shrader Holding Company, Inc., an Arkansas corporation. 54) Southwest Stainless, L.P., a Delaware limited partnership. 55) Stainless Tubular Products, Inc., an Oklahoma corporation. 56) Sunbelt Supply Co., a Texas corporation. 57) Union Merger Corporation, a North Carolina corporation. 58) USCO Incorporated, a North Carolina corporation. 59) U.S. Fusion Services, Inc., a Louisiana corporation. 60) Virginia Water & Waste Supply Company, Inc., a Virginia corporation. 61) WCC Merger Corporation, a Georgia corporation. 62) Wholesale Electric Supply Corporation, a New York corporation. 63) Z&L Acquisition Corp., a Delaware corporation.