Aluminum & other Metal Shingles Contractor (C-42a) Fabricated Metals Roof Coatings Contractor (C-42g) Roofing Contractor (C-42) Waterproofing Contractor (C-55)

Concrete Forming Concrete Rehabilitation Crane & Rigging Ductile Iron Pipe Fittings, Valves, Hydrants Fabricated Metals General Engineering & Specialty Contractors (AC) General Engineering (A) Industrial Equipment Mechanical Contractor Metal Buildings Pipes & Valves Fittings Pumps Installation Contractor (C-57a) Sewer & Drain Line Contractor (C-37a) Sewer, Sewage Disposal, Drain, & Pipe Laying Contractor (C-43) Structural Steel Contractor (C-48) Valve Repair Valves/Pumps Waste Treatment Systems Waste Water Equipment

Design-Assist Cabinet, Millwork, & Carpentry Remodeling & Repairs Contractor (C-5) Gutters Contractor (C-44a) General Building & Specialty Contractors (BC) Fire Protection Contractor (C-20) Fabricated Metals Solar Hot Water Systems Contractor (C-61a) Solar Energy Systems Contractor (C-61) Sheetmetal Contractor (C-44) Sewer & Drain Line Contractor (C-37a) Plumbing Contractor (C-37) Ornamental, Guardrail, & Fencing Contractor (C-32) Metal Roofing Manufacturer Subcontractors Welding Contractor (C-56) Water Chlorination & Sanitation Contractor (C-37d) Ventilating & Air Conditioning Contractor (C-52) Structural Steel Contractor (C-48)

Fabricated Metals Wholesale Construction Supplies Steel Products Supplier Material & Equipment Dealers

Decking Building Materials Supplier Boiler, Hot-Water Heating & Steam Fitting Contractors (C-4) Fabricated Metals Security Grills Pipes & Valves Fittings Metal Buildings, Roofing & Siding Supplies Metal Buildings Subcontractors Welding Contractor (C-56) Structural Steel Contractor (C-48) Steel Service Center Steel Products Supplier Steel Door Contractor (C-48a)