Threading black iron pipe?

03-12-2007, 02:50 PM	#1
sandyman720 Member   Join Date: Mar 2007 Posts: 209	Threading black iron pipe? Hello, I can get black iron piep a lot cheaper at a metal distubuter but they will not thread it. Home Depot and Lowes will thread it but it is 2x the price. What options do I have to thread this pipe? It will be 1.5" and 1.25" piping. Thanks!

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03-12-2007, 03:07 PM	#2
majakdragon Member   Join Date: Sep 2006 Posts: 1,670	Threading black iron pipe? Rent a hand die and reamer, and buy a can of cutting oil. You can also rent a power pipe threader, and depending on how many threads you will be cutting, that may be the way to go. You still need the reamer and oil though. You will also need a vice to hold the pipe while threading. __________________ If you have never made a mistake, you haven't done much.

03-12-2007, 06:27 PM	#3
BigJimmy Power Gen/RS Engineer   Join Date: Jun 2006 Location: Oak Park, Illinois Posts: 695	Threading black iron pipe? Being quite a novice at working with black iron, I am curious. When measuring and cutting the pipe, how much "shrink" do you assume due to the fittings threading onto the pipe? __________________ The very existence of flamethrowers proves that some time, somewhere, someone said to themselves,"You know, I want to set those people over there on fire, but I'm just not close enough to get the job done." - George Carlin

03-12-2007, 07:50 PM	#4
majakdragon Member   Join Date: Sep 2006 Posts: 1,670	Threading black iron pipe? On one inch pipe, between 1/2" and 5/8". Depending on the condition of the die, it could be either. Best way to check is to run a fitting on the first thread and check it. Fittings can also run shallow or deep threads. __________________ If you have never made a mistake, you haven't done much.