Steel Pipe Flange Types

A flange is the most common means of connecting pipes, valves, pumps and other equipment.
Types of Flange
Welding Neck Flange
Slip on Flange
Socket Weld Flange
Lap Joint Flange
Threaded Flange
Blind Flange
Materials for Flanges
Pipe flanges are manufactured in all the different materials like stainless steel, cast iron, aluminum, brass, bronze, plastic etc. But the most used material is forged carbon steel that include machined surfaces.
In addition, flanges, like fittings and pipes, for specific purposes sometimes internally equipped with layers of materials of a completely different quality as the flanges themselves, which are "lined flanges".
The material of a flange, is basically set during the choice of the pipe, in most cases, a flange is of the same material as the pipe.
All flanges, discussed on this website fall under the ASME and ASTM standards, unless otherwise indicated. ASME B16.5 describes dimensions, dimensional tolerances etc. and ASTM the different material qualities.
A105 = This specification is the standard for forged carbon steel piping components for ambient- and higher-temperature service in pressure systems.
304 = This specification is a common standard for stainless steel due to its malleability, high corrosive resistance weld-ability.
316 = This specification is a molybdenum steel that provide excellent tensile, creep and stress-rupture strengths at elevated temperatures.
Alloy 20 = This specification is a "Super" stainless steels that was designed for maximum resistance to acid corrosion, cracking and pitting attack.
Alloy 200 = This specification is an unalloyed wrought nickel with excellent corrosion resistance, mechanical, magnetic and magnetostrictive properties.
Alloy 400 = This specification is used for its excellent combination of corrosion resistance, strength, ductility and weld-ability.
Alloy 600 = This specification is a nickel-chromium-iron alloy used for applications which require resistance to corrosion and heat.
Duplex 2205 = This specification is a ferritic-austenitic stainless steel with very good pitting and uniform corrosion resistance, as well as high mechanical strength.
www.trupply.com/pages/flange-t...

[@laoudifouad7365]

Thank you for Morocco

[@GemmyHeart]

Good video.

[@candevallejo]

This is the video that I was looking for. All of the others videos showed me drawings; I want it for real!thank u so much! Keep going this way!

[@nikhilkesharwani2316]

It's very helpful,Thank's a lot.

[@victorortiz1651]

great video!

[@krishnaiahmodhu8255]

Good video

[@AHMEDALI-rq7jg]

very good explanation

[@rajeshparida1227]

thanks

[@TrupplyTheWoodlands]

150 lb or 150 # is the term used to specify pressure class of the flange. There is no real correlation of this with actual pressure rating which is also a function of temperature. The pressure class starts from 150 and goes all the way to 2500. 150 lb & 300 lbs are the most commonly used flange pressure classes. In the video, at 7:25 there is a table that correlates pressure class to European classification of pressure (PN) and pressure rating at various temperatures.

[@nobi438]

good

[@nikhilkesharwani2316]

Can you make the video for different loads and moments in the flange?

[@soulshaker205]

What’s the difference between the lap joint and the flat faced. You held them both up but they look identical. How can I tell the difference between the two?

[@sajidrahman3821]

Close up shot is better

[@dominikkonik3263]

What do you mean when you say 150 lb?

[@zerofucksgiven5955]

150 psi is the rated working pressure for that flange at a certain temp. I believe it is somewhere 8 to 900 degree range.

[@sushant8972]

what is PN number?

[@miteshshah8381]

sushant kapoor we deal in flanges.. contact me on [phone]