Testament Posted December 23, 2014 Share Posted December 23, 2014 Also, I only recently discovered Sch-40 and Sch-40s are not necessarily the same wall thickness, particularly in large diameter. I think. I could be wrong though. Yeah large diameter gets all funky and you need to be super specific or you end up with expensive ground anchors. There's even two very similar ANSI flange patterns with different pcds and numbers of bolts So many shits and giggles Quote Link to comment Share on other sites More sharing options...
UTERUS Posted December 23, 2014 Share Posted December 23, 2014 Ohhhhh I see. That makes sense sorta. Is the schedule akin to a pressure rating or flow rating of some sort? Did you read what Tom said? He sums it up. ^this Pressure piping mechano set rules etc The OD remains the same for all "weights and schedules" but thickness changes with diameter and weight/schedule Weights and schedules relate approximately to pressure ratings but there are so many variables there can't be a fixed number that sch40 is rated to 20bar or whatever. Different temps, products, earthquake ratings, other static and dynamic loads etc etc etc Quote Link to comment Share on other sites More sharing options...
Testament Posted December 23, 2014 Share Posted December 23, 2014 On top of all this pipe is normally specified by NB nominal bore, NPS nominal pipe size or DN diametere nominale for euro/metric pipe, which is still actually usually the same actual dimensions as Imperially specified pipe. But not always. Then none of the sizes the pipe is ordered in actually corresponds to the OD or ID exactly. End piperant. 2 Quote Link to comment Share on other sites More sharing options...
Roman Posted December 23, 2014 Author Share Posted December 23, 2014 I saw an iron pipe today it was Fe nominal 8 Quote Link to comment Share on other sites More sharing options...
V8Pete Posted December 23, 2014 Share Posted December 23, 2014 Yeah large diameter gets all funky and you need to be super specific or you end up with expensive ground anchors. There's even two very similar ANSI flange patterns with different pcds and numbers of bolts So many shits and giggles ANSI 16.47 Series A/B has cocked over many mortals.Don't get me started on poly pipe. Or some stupid duplex or Monel heat exchanger from a vendor that refuses to not use DIN flanges etc. Or structure that's been designed with JIS structural members and being fabricated not in Japan. Quote Link to comment Share on other sites More sharing options...
V8Pete Posted December 23, 2014 Share Posted December 23, 2014 Oh man, and those stupid butterfly valves that have four (or more) threaded holes in 1" or bigger or whatever the stud size is where studs change from UNC to UN8 and the threaded holes are always the UN-something else. Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted December 23, 2014 Share Posted December 23, 2014 Lol. We did a big pipe job from 4pm till 6am on Monday/yesterday. Thought we were finished then realized the new guy had welded some random dn flange to this pipe (I think it was dn 6 rather than 16) So much fail.... Dunno where the odd flange even came from. I hate steam pipes/ pipe threads/schedule/ plus anything even remotely imperial. /should join police force Quote Link to comment Share on other sites More sharing options...
Testament Posted December 23, 2014 Share Posted December 23, 2014 Oh man, and those stupid butterfly valves that have four (or more) threaded holes in 1" or bigger or whatever the stud size is where studs change from UNC to UN8 and the threaded holes are always the UN-something else. Threaded/lugged wafer butterfly valves for end of line service? Not sure I've struck that issue before. Usually just suppliers sending table E when you ordered ansi150lb because they are only 2mm different and they didn't look/was what they had on the shelf. Then it doesn't fit because that 2mm does matter Quote Link to comment Share on other sites More sharing options...
Llama Posted December 23, 2014 Share Posted December 23, 2014 Intradesting http://www.corner-carvers.com/forums/showpost.php?p=931366&postcount=111 10dB is half the subjective volume, so I think he did quite well out of that. Measuring actual frequency content of the drone (rather than the engine frequency) would have been more useful I would have though. Quote Link to comment Share on other sites More sharing options...
V8Pete Posted December 23, 2014 Share Posted December 23, 2014 Threaded/lugged wafer butterfly valves for end of line service? Not sure I've struck that issue before. Usually just suppliers sending table E when you ordered ansi150lb because they are only 2mm different and they didn't look/was what they had on the shelf. Then it doesn't fit because that 2mm does matterOn one job i was on someone made a LOTR "one does not simply" meme thing. One does not simply buy 1-1/2" UN8 studbolts. Quote Link to comment Share on other sites More sharing options...
V8Pete Posted December 23, 2014 Share Posted December 23, 2014 Or maybe it was UNC. I can't remember. Quote Link to comment Share on other sites More sharing options...
Roman Posted December 24, 2014 Author Share Posted December 24, 2014 Fuck ive stripped the thread for exhaust manifold on the head of my engine. Best way to fix? Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 24, 2014 Share Posted December 24, 2014 drill and tap next size up or helicoil? 1 Quote Link to comment Share on other sites More sharing options...
Roman Posted December 24, 2014 Author Share Posted December 24, 2014 Hmmm okay. Not much chance of getting it fixed until after the stat days etc. sad face Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 24, 2014 Share Posted December 24, 2014 drilling and tapping wouldnt be hard, what size do you need? there is a right angle cordless drill at work Quote Link to comment Share on other sites More sharing options...
Roman Posted December 24, 2014 Author Share Posted December 24, 2014 I believe it is/was an M10 1.25. Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 24, 2014 Share Posted December 24, 2014 could you put an m12 in it? Quote Link to comment Share on other sites More sharing options...
Roman Posted December 24, 2014 Author Share Posted December 24, 2014 Dont see why not... Do you have an M12 tap? Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 24, 2014 Share Posted December 24, 2014 yeah man, I am going away on the 27th, but I can help you tomorrow or boxing day 1 Quote Link to comment Share on other sites More sharing options...
Roman Posted December 24, 2014 Author Share Posted December 24, 2014 Awesome! Thanks I'll give you a shout Quote Link to comment Share on other sites More sharing options...
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