Piping Flange Types, Faces, and Surfaces - Explained!

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Learn about pipe flanges! This video teaches you about Flange Types, Faces, Surfaces, and how flanges work. We also take a look at flange gaskets and their usage within piping systems.
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▶️Piping flanges are essential components within all piping systems. A flange is a type of mechanical joint and is the second most common type of joint after a welded joint. Unlike welded joints, a flange can be quickly and easily assembled and disassembled.
Flange Types
The most common flange types are the:
- Blind Flange
- Slip-on Flange
- Socket Weld Flange
- Welding Neck Flange (also known as a ‘weld neck flange’)
- Lap Joint Flange (LJF)
- Threaded Flange (also known as a ‘screwed flange’)
Blind flanges are used for a wide range of pressure classes and may have all types of flange face.
Slip-on flanges are used for medium to low pressure classes and use flat or raised faces.
Welding neck flanges are suitable for a wide range of pressures, temperatures and NPS sizes; they are the most common type of flange within the oil and gas industry.
Socket weld flanges are used for smaller nominal pipe sizes, and low to medium pressures.
Lap joint ring flanges do not come into contact with the process medium. A stub end is inserted through the LJF and welded to the associated pipe; it is the stub end that comes into contact with the process fluid. Stub ends can be used for a wide variety of pressure classes and temperatures.
Threaded flanges are used for lower pressure and temperature applications. Typically, the NPS of a threaded flange is small (less than 4”).
The most common flange faces are the:
- Flat Face (FF)
- Raised Face (RF)
- Ring Type Joint (RTJ)
Flat face flanges have a large sealing area and are used for low pressure and low temperature system. Raised face flanges have a much smaller sealing area and are often serrated; this type of flange is used for medium pressure systems and higher. RTJ flanges have a small sealing area and use metal gaskets (hard gaskets); RTJ flanges are used for medium pressure systems and higher.
The most common flange surfaces are the:
- Smooth
- Serrated (which can be concentric or spiral [phonographic])
- Stock Finish
Stock finish surfaces are the most common flange finishing surface. Raised face flanges usually have a serrated surface. Flat face flanges have a smooth surface finish and are used for lower pressure applications.
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[@savree-3d]

Download your Free Piping Flange Handbook below (seriously, it is free)! piping-flange-fundamentals-course.savree.com/ebook

[@bdot02]

It's not all that often that the algorithm actually recommends a video I might actually enjoy like this...

[@RaviMallappa]

Very well explained. I'll never have to worry about remembering the flange faces again.

[@jacopodigiacomantonio3103]

working in the Oil&Gas industry since 6months and finally i understood why flanges are not just 2 slab of metals to connects pipes and valves together. Really appreciated the “make it simple” touch of the presentation while explaining everything completely.

[@daved3494]

That was excellent. Absolutely fascinating. I was in hvac, so frequently saw slip on flanges. I recall the importance of welding the face and the neck of SO flanges. Although frequently, in the field, only the neck would be welded.

[@paulnaveen1499]

So much information demonstrated in a beautiful manner

[@ch4processer]

😄5:43 could not stop grinning at the comparison here , these are moments that make my work place entertaining. Thanks for adding some glitter to this tutorial

[@jocelynxiang7627]

Great courses, really enjoyed! Much appreciated!

[@savree-3d]

Glad to hear that. Took me over six months to write the content for this course.

[@gianmg_]

Oh man, your work is truly awesome! Thank you so much for sharing this content.

[@jonrussell8587]

You're welcome

[@gouravpandit007]

Best video on flanges 👌👍 your way of thinking and teaching is superb,thanks a million.

[@1Piecer]

Thank you, this is one of the best basics in Mech field. Much appreciated.

[@savree-3d]

You're welcome

[@aravinthraj3341]

Beautiful explanation and presentation as always 👏👏

[@johnivanvillanueva2757]

Thank you so much all your videos are really helpful.hope you will upload a video of how the compressor works.

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I love how you explained that you must understand the concecpt. 🙂 i'm rookie, have no papers, but so passionate about engineering.

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So well explained!

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This videos is freaking great! So much useful information!

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Great explanation and very well structured. Thank you!

[@savree-3d]

You're very welcome!

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wow, this is brilliant!

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What a great explanatory video on flanges and types 👌 Thanks for producing such an amazing and engaging content on engineering.

[@savree-3d]

You're welcome

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Can you tell me which software is this??

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amazing, I found this chanel yesterday and I have been watching some videos and everyone of them are amazing for learnig new stuff and refreshing some concepts even.

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Welcome aboard!

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Been getting ready to the job interview while watching your videos, and now still watching after i got the job offer😊

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Excellent! ... Very informative.

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that was a perfect explanation , thank you ^^

[@ikramkhan4453]

I was too much confused from 2 years but now i understand the whole phenomena very well.its a great vedio and i think many people like me will now understand flanges

[@OmarArts-qn1nl]

It's so interesting and informative. Thanks a lot.

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Thanks for sharing ☺️ and very informative 👍👍👍

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Wonderful as usual stay blessed sir

[@faribouananidjelloul571]

I really appreciate your courses Sir. It is very academic. I need Sir in future, If you can give us some webinars about PID's (process and piping). Thank you sir

[@neilpainter1189]

Fantastic video, thanks for creating!

[@savree-3d]

No problem

[@ismailsayah624]

thanks sir this was a very informative video , I work in oil drilling and we use lot and many types of flanges, especially the types 6B and 6BX flanges for high pressure applications 5K, 10K and 15K psi. the sealing grooves are very small compared to the size of flanges thus allow the device to sustain high pressures. a fine application of the P=F/S concept

[@tedthetford6401]

Great job Mr Piping Engineering applications

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very helpful, thanks!💯👏

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Thanks for this video 🤝

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Absolutely flangetastic video 👍👌

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thanks this was a very informative video

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was very helpful thank you

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You're my hero.. Thank you. Very helpful.

[@savree-3d]

You're welcome.

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@@savree-3d how are you this good at explaining things?'

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So helpful. Thankyou!

[@savree-3d]

Glad it was helpful!

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Great Video, thanks a lot.

[@savree-3d]

Thanks for watching

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Just amazing!

[@savree-3d]

Thanks!

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great video and presentation I will look at your courses

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Awesome, thank you! courses.savree.com

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Great video

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I like this... thanks a lot... 🙏

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I've enjoyed all of your videos thus far. Personally I would have saved the seal joke and inserted a picture of myself when you said Stud. But who am I? You rock🤘

[@savree-3d]

Good point. Will have to get that joke in the next video. The seal joke had to go in the video though, I just could not leave it out (I tried).

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Excellent channel. Keep it up

[@savree-3d]

Will do

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I realy like all of your videos ....and please I want the other video that locked to see and download it ......

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Excellent video! What software is that? The model looks amazing. Thank you. Suggestion: do a video on hydraulic fittings, hoses, adapters, etc.

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ISO를 실제 제품으로 볼수 있으니 공부하는 엔지니어들에게는 쉽게 이해가 되겠어요. 좋은 영상 입니다. 저도 열교환기 열정산 지식전달 유튜브를 운영하고 있는데 도움이 되셨으면 합니다~ㅎ

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Just came across this brilliant resource. Excellent content. Can I ask what software was used to create the amazing graphics. Really brings the content to life

[@savree-3d]

We use screen capture and saVRee.com

[@anasluqman3042]

thank you

[@savree-3d]

No problem!

[@PAK.77]

Videos on actuators & expansion joints.... On different types of valves Please

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just wowwwww

[@harshalalone4106]

Well explained sir. 5:40 seal 😆😆😂

[@savree-3d]

That joke had to go in there

[@stevehartley8716]

What software is used to generate this model but also the rendered graphics? The surface finishes are next level realistic! Cheers

[@darrennixon8765]

Nice

[@savree-3d]

Thanks

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Very intriguing, very informative. Can you please share the software name that you are using to view the 3D model?

[@savree-3d]

Used screen recording software and saVRee.com

[@artbybigvee]

What software did you use to make those model sir, and how long will it take to reach such level of proficiency?

[@jhonllanto2555]

Hi Sir Good day. May I ask if I can use a Raised face type valve in flat face flanges?

[@GemmyHeart]

Main products: sealing gasket,gland packing,PTFE/graphite/asbestos products, ceramic fiber products, high temperature heat insulation and fireproof material.

[@johnmgannon84]

Lol...the seal was a fan of ur pun at 2:25.

[@BhagwaTrapAwarenessUZMA]

Which software is this??

[@salahdesigner5771]

what software been used in this 3D modeling?

[@deepakchandra6668]

😊😊

[@pattoallen1981]

I have seen plenty of threaded langed that ar welded

[@savree-3d]

Want to continue learning about engineering with videos like this one? Then visit: courses.savree.com/ Want to teach/instruct with the 3D models shown in this video? Then visit: savree.com/en

[@samehanwar5691]

YOU didn't mention any information about reduced flanges ( types- dimentions .. etc )

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The minute I clicked on this video, I fully realized how much of a nerd I am.

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Check out courses.savree.com. You can access everything there for 9.99 EUR.

[@siggma556]

Vishwakarma was best engineer ever sir

[@Srk7028]

you still not explained how tightening flange bolt

[@fadilojifinni9708]

This voice sounds so familiar 😑, Engineering Explained?

[@jeanclaudethedarklord6205]

3:23 deeznuts..... I'm sorry

[@aryadas7786]

Seal 🤣🤣🤣

[@ogreunderbridge5204]

Yet, any man is easily 5 times physically stronger than any woman of the same build. PC is BS. Let it go. Thanks for the flanges

[@thecap5222]

Which way around does the blond flange get installed? Is it the flat side agaisnt the gasket or the inner raised side against the gasket?