Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 23-11-2020, 15:00   #1
Registered User

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 4,306
Sourcing 3in, polished 316 stainless Flanges?

I’ve found them for my 2” columns. Now I need them for my 3” columns.

Can’t find them anywhere online.

Anyone know where to source the 3in version of this?

https://www.buyrailings.com/product/...hoCGgEQAvD_BwE

Chotu is offline   Reply With Quote
Old 23-11-2020, 15:21   #2
Registered User

Join Date: Oct 2019
Location: Kennebunk ME
Boat: Owner built 60í Aluminum Expedition Yacht.
Posts: 569
Re: Sourcing 3in, polished 316 stainless Flanges?

Not exactly like what you have in your photo, but in the food and dairy industry, they have a joint that has two flanges and a clamp that pulls them together.
Youíd have to drill holes. I find sections of polished 316 tubing with these ends at my favorite recycle yard. Good luck.
Happy trails to you
Mark and his TIG gun manatees
Manateeman is offline   Reply With Quote
Old 23-11-2020, 15:29   #3
Registered User

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 4,306
Re: Sourcing 3in, polished 316 stainless Flanges?

Quote:
Originally Posted by Manateeman View Post
Not exactly like what you have in your photo, but in the food and dairy industry, they have a joint that has two flanges and a clamp that pulls them together.
Youíd have to drill holes. I find sections of polished 316 tubing with these ends at my favorite recycle yard. Good luck.
Happy trails to you
Mark and his TIG gun manatees
I was just reading a different thread where you talked about the Boston Sanford and son.

Would love to visit that.

I guess Iím looking at machine shops now.
Chotu is offline   Reply With Quote
Old 23-11-2020, 16:15   #4
Registered User
 
AndyEss's Avatar

Join Date: Dec 2016
Location: Sea of Cortez/northern Utah/ Wisconsin/ La Paz, BCS
Boat: Hans Christian 38 Mk II
Posts: 725
Images: 1
Re: Sourcing 3in, polished 316 stainless Flanges?

try McMaster-Carr
AndyEss is offline   Reply With Quote
Old 24-11-2020, 17:56   #5
Marine Service Provider

Join Date: Sep 2014
Location: Auckland, NZ
Boat: Compass 790 , 7.9 metres or 26 ft
Posts: 2,058
Re: Sourcing 3in, polished 316 stainless Flanges?

Go to any place that does fabrication for breweries or dairy industry. If you cant find one visit a micro brewery or a brew pub ( bar ) & ask who does their welding & fabrication.
Just what manateeman said but just widening the angle assuming you are in the USA
Compass790 is offline   Reply With Quote
Old 24-11-2020, 18:33   #6
Registered User

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 4,306
Re: Sourcing 3in, polished 316 stainless Flanges?

Quote:
Originally Posted by AndyEss View Post
try McMaster-Carr
They only had industrial ones for threaded pipe.
Chotu is offline   Reply With Quote
Old 24-11-2020, 18:42   #7
Registered User

Join Date: Oct 2019
Location: Kennebunk ME
Boat: Owner built 60í Aluminum Expedition Yacht.
Posts: 569
Re: Sourcing 3in, polished 316 stainless Flanges?

Beer breweries...excellent suggestion. Good for 316 stainless tanks, valves, pipe, pumps...cool catalogues of suppliers.
Unfortunately Iím barred from visiting because the manatees have tapped into the tanks and drained them dry.
Happy trails to you
Mark and his fuzzy flatulent friends.
Manateeman is offline   Reply With Quote
Old 24-11-2020, 18:43   #8
Registered User

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 4,306
Re: Sourcing 3in, polished 316 stainless Flanges?

Quote:
Originally Posted by Compass790 View Post
Go to any place that does fabrication for breweries or dairy industry. If you cant find one visit a micro brewery or a brew pub ( bar ) & ask who does their welding & fabrication.
Just what manateeman said but just widening the angle assuming you are in the USA
The fabricators are telling me the part Iím looking at is cast.

That if they make one and weld it, itíll look like crap.

The other ones at various places ass industrial pipe flanges.

This is a centerpiece of the boat. One of the things that will determine the boatís value. I really need them to look like the one in the pic I started the thread with.
Chotu is offline   Reply With Quote
Old 24-11-2020, 19:00   #9
Marine Service Provider

Join Date: Sep 2014
Location: Auckland, NZ
Boat: Compass 790 , 7.9 metres or 26 ft
Posts: 2,058
Re: Sourcing 3in, polished 316 stainless Flanges?

Ok it might be 25 years since I was doing brewery/ dairy factory fab & welding but I thought you could get 3" polished ones. Try something called an RJT fitting IIRC that manteeman was talking about. That polished fitting you picture in OP starts out life as a cast fitting & is polished. You can take a cast flange to a metal polishing place & they can get it to look like that.
Those bright shiny ss tanks you see in a brewery dont start out looking like that they are polished.
Good luck with your search
Compass790 is offline   Reply With Quote
Old 24-11-2020, 19:05   #10
Registered User

Join Date: Oct 2019
Location: Kennebunk ME
Boat: Owner built 60í Aluminum Expedition Yacht.
Posts: 569
Re: Sourcing 3in, polished 316 stainless Flanges?

Try Hempel pipe co. Slip on flanges. I think these are Merit Brass co.
Good grief itís an easy weld...pipe to a blind flange or plate.
Sand and polish.
Find somebody that does pharmaceutical, dairy, beer, fabrication work.
Iíve seen TIG stainless welds just polished and they look as nice as cast.
The pieces are small so you can have them done and shipped in a shoebox.
You get back two feet from the weld and it looks no different from cast.
Go ask a welding supplier of argon...they know who buys the most and that will get you to a good shop.
Happy trails to you
Mark and his sleepy manatees
Manateeman is offline   Reply With Quote
Old 24-11-2020, 19:19   #11
Registered User

Join Date: Oct 2008
Boat: Custom cutter, 42'
Posts: 572
Re: Sourcing 3in, polished 316 stainless Flanges?

A fabricated part, ie made to order for you in a shop, will NOT look like crap if the shop is even remotely competent. It is a simple matter of machining the flanges and welding them to sections of tubing. After the welding is done the piece can be polished and it will look very nice. I suggest you talk to shops that do this type of work and select one that suits you. For guys that know how to do this type of work this is a simple job.

Good luck with it.
Pauls is offline   Reply With Quote
Old 24-11-2020, 19:38   #12
DoÖ or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 11,555
Re: Sourcing 3in, polished 316 stainless Flanges?

A machine shop fabricates that quick and easy. If it is a centerpiece, I would ask the machineshop use 316L or better and to polish it, then bring it to an electropolisher as well.
__________________
This is just an answer/comment; not interested in arguing or dealing with the trolls
s/v Jedi is offline   Reply With Quote
Old 24-11-2020, 19:47   #13
Registered User

Join Date: Oct 2019
Location: Kennebunk ME
Boat: Owner built 60í Aluminum Expedition Yacht.
Posts: 569
Re: Sourcing 3in, polished 316 stainless Flanges?

Paulís absolutely correct! Google : Welding Tips and Tricks and check out some of the stainless welding...before...itís been polished.
Guys and women who do this work produce flawless welds...
Itís hard to tell from cast unless you are a TIG welder.
Happy trails to you.
Mark and his Miller Blue manatees
Manateeman is offline   Reply With Quote
Old 24-11-2020, 19:59   #14
Registered User

Join Date: Mar 2016
Boat: McCurdy & Rhodes Custom 46
Posts: 893
Re: Sourcing 3in, polished 316 stainless Flanges?

I used to source lots of half nipples (thatís what it is) in various stainless alloys. Vacuum systems, breweries, dairies all use them. Competently welded, ground and electro polished they are a work of art.
Often the internal part of the fitting is important in those industries (smoothness and contamination) so if you have one made be clear with the shop that the outside is where your appearance concerns are.
304 is more common than 316 for these applications.
There are shops whose bread and butter is this kind of stuff.
And local to you perhaps. Or maybe a place like Whitewater Marine will do the job.
dfelsent is offline   Reply With Quote
Old 24-11-2020, 23:46   #15
Registered User

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 4,306
Re: Sourcing 3in, polished 316 stainless Flanges?

Thanks for the thoughts and ideas, guys.

I guess because the machine shops were coming back to me saying they couldn’t reproduce this as it’s cast and not welded, I was believing them. I’ll keep looking.
Chotu is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sourcing polished 316L tubing Muaddib1116 Construction, Maintenance & Refit 15 23-11-2020 12:14
[SOLD] Polished stainless steel 7/8 shackle $600 pbmaise General Classifieds (no boats) 0 31-12-2016 14:01
For Sale: Spinnaker pole, 16ft x 3in dia chienbizarre Classifieds Archive 7 24-08-2012 03:37
For Sale: Engine controls - Marpac polished cast stainless steel vientoman Classifieds Archive 0 10-07-2012 23:54
Flanges, Pipes and Rails - Oh My! unbusted67 Deck hardware: Rigging, Sails & Hoisting 1 23-03-2010 16:16

Advertise Here


All times are GMT -7. The time now is 22:04.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.