Plumbers & Steamfitters Local Union 412

Plumbers & Steamfitters Local Union 412 is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Steam Fitters

North American Industry Classification System (NAICS) Categories:

• Plumbing, Heating, And Air-Conditioning Contractors > Boiler & Furnace Contractors > Steam Fitters

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Boiler & Furnace Contractors > Steam Fitters