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Construction Workers Memorial Mass on April 28th.
Thu, Apr 9, 2015

3:00PM at St. Patrick's Cathedral.  Please click on link for all information on Mass.  Construction Mass 2015.pdf


Union Hall will be open Saturday, March 7, 2015 8:30AM to 3:00PM
Thu, Feb 26, 2015

Union Hall will be open Saturday, March 7, 2015 from 8:30AM to 3:00PM for members to pick up 2015/2016 Union Card and also to take a New Photo. Address is 27-08 40th Avenue 4th Floor. Please note we have indoor parking.


Welcome to the New Website for Steamfitters Local 638
Mon, Jan 19, 2015

The leadership and members of Steamfitters Local 638 of the United Association of HVACR, Steamfitters, Pipe Fitters and Sprinkler Fitters would like to welcome you to our newly designed website.  On our site you can find out a great deal of information about our great local and international union.


Important Information! We have Moved!

The Steamfitters Union Office has moved to:
27-08 40th Avenue, 4th Floor
Long Island City, NY 11101


Welcome to the Enterprise Association of Steamfitters Local 638

Enterprise Association of Steamfitters Local 638 of the United Association was chartered in 1884 under the Knights of Labor as Enterprise Assembly #3189. In 1914 the Enterprise Assembly affiliated with the United Association as the Enterprise Association of Steam, Hot Water Hydraulic, Sprinkler, Pneumatic Tube, Ice Machine and General Pipe Fitters of New York and Vicinity Local 638 and the Progress Association of Steam, Hot Water and General Pipe Fitters Helpers of New York and Vicinity Local 639. At the same time, a trade line agreement was drafted which established jurisdiction between the Steamfitter and Plumber, commonly referred to as the 1914 agreement.

Today, Steamfitters Local 638 maintains jurisdiction over all general pipe fitting in New York City, including all five boroughs and all of Long Island, Nassau and Suffolk Counties and is a combination local union representing the Construction Branch and the Metal Trades Service Branch. On April 14, 2010 Enterprise Association of Steamfitters Local 638 celebrated our 125th Anniversary.