RMC 90's not 90

[hillbilly1]

Yeah, they have been doing that for a long time, even the large EMT 90’s. Somebody’s not checking the spring back on the automatic bender at the factory!

 

[electrofelon]

It is an issue with RMC 90° elbows. A while ago I ran some 3" RMC for a fire pump disconnect and I couldn't get the horizontal pipe level and the vertical pipe plumb. Was off about 2°. Had to cheat the horizontal to make it look decent. Sometimes if you back off a 1/4 turn in the couplings you can fudge it with the slop in the couplings.

Glad to hear I'm not the only one who has noticed this. It is unbelievable to me that a factory made item produced in bulk like this would be so far out of whack. What also annoys me about this is these things are UL listed. Doesn't really instill confidence that all this listing accomplishes anything. Maybe the listing spec doesn't say anything about the degree tolerance?

 

[readydave8]

Huh? What are you talking about?

I think the 2nd sentence was to meet minimum characters for post

 

[Fred B]

Wow, so it's not just me, I've been seeing more lately looking at cockeyed factory cut pipe or come across "why can't I get this to fit?" To finding a really weird cut thread, and can't get my head around how it was cut what looked like 3-5° off angle to the pipe, seems it shouldn't have even been posible. Like the dye was pitched 5° from the pipe as the thread was cut on the factory threaded pipe. Also a lot of weird PVC pipe and fittings.

 

[James L]

Wow, so it's not just me, I've been seeing more lately looking at cockeyed factory cut pipe or come across "why can't I get this to fit?" To finding a really weird cut thread, and can't get my head around how it was cut what looked like 3-5° off angle to the pipe, seems it shouldn't have even been posible. Like the dye was pitched 5° from the pipe as the thread was cut on the factory threaded pipe. Also a lot of weird PVC pipe and fittings.

Quite possibly made in China, where they have subpar manufacturing and maching.

This is interesting, from 2007...

Customs Ruling NY N013135 - The tariff classification of electrical conduit pipe, conduit elbows and conduit bends from China.

The tariff classification of electrical conduit pipe, conduit elbows and conduit bends from China.

www.customsmobile.com