All You Need to Know About the Types of Flanges

The primary purpose of the flanges is to help connect pipes, valves, and pumps. With a range of materials available and a variety of types and styles, you need to be aware of all the aspects and get adequate information beforehand in order to make the right choice. The most commonly available types of flanges that you can use in your industries are given below;


Slip-n flanges are the type of flanges that are connected to the pipe or the fittings. The connections are made by getting it welded inside and outside. In other words, these flanges are ring-shaped structures placed over the pipe’s end. As the name suggests, these flanges are supposed to have a slipping property, which means they slip over a pipe. Following the same point, they are designed to have a larger bore size and the diameter of the outside pipe as well.


  • They save a lot of safe because of their compact and slim shape.
  • They are the best-used options in liquid industries, with a low risk of leakage and spillage.
  • They are easily affordable.
  • They are used in low-pressure and temperature areas.
  • They are among the most popular and frequently used flanges types.



Other names for weld neck flanges are high high-neck flanges or tapered hub flanges. These flanges systems are designed in a way that they have a well-balanced neck that helps in transferring the tension of the pipe. The channel is also beneficial in reducing the overall pressure that otherwise would accumulate at the flange button and would result in distortions. Most customers prefer them because they are capable of functioning even at high temperatures.


  • They help in distributing the mechanical stress of the pipe.
  • These flanges can tolerate extremely high temperature and pressure conditions.
  • You can easily connect them with either fittings or pipes.
  • They are approvingly resistant to corrosion and rust.
  • They reduce the overall friction and also offer minimal to no turbulence.



Socket weld flanges are the type of flanges that adjust the incoming pipe into the socket to great a fitting. The connections are made with the help of fillet weld on the exterior. They are mostly preferred in the situation when there is an issue with space management, as they can even fit perfectly and effortlessly and narrow spaces. They are not preferable to be used for something other than critical services.


  • Their sleek and small design makes them an ideal choice for small pipes.
  • They offer double fatigue strength than the double-wedged flanges.
  • The risk of leakage is shallow.
  • Their static power is the same as the slip-on flanges system.
  • They are commonly used in areas of high pressure.



Blind flanges are the type of flanges that do not have a bore at the center of the flange system. Such kinds of flanges are used to terminate or seal the ends of pressure vessel openings, valves, and pipes. In short, they are helpful in stopping the flow of liquid. Because of the simple design, these flanges can be bolted and unbolted easily compared to the other flanges types.


  • They have high mechanical stress-tolerating abilities and are known to strengthen the pipe system.
  • They are capable of sustaining high-pressure areas.
  • They are beneficial in sealing the opening of the nozzle effortlessly.
  • They can function well, even if located at greater distances from the work site.
  • They are easier to clean and inspect and thus can preserve a lot of time and money.



Such flanges have a flat face and are always used in combination with a stub end. They are usually preferred to be used in expensive pipes and closely resemble the slip-on flanges, except for a few differences in the manufacturing design. They are highly affordable and help reduce the piping system’s overall cost as they minimize the need for expensive materials.


  • They are fortunate to use, and they do not cost much money.
  • They help simplify and ease the bolting operations.
  • These flanges have freedom of movement around the pipe and can move quickly without restrictions.
  • They are easy to assemble, and the pipe can be removed easily at any time for cleaning purposes.



These flanges are also very much similar to slip-on flanges, but the only difference is that they have a tapered thread. This addition of tapered thread helps threaded flanges to get attached to the pipes without welding.


  • They are ideal be used in pipes that have a small diameter.
  • They are used in low-pressure and low-temperature areas.
  • They are incredibly beneficial to be used in explosive places like gas stations and power plants.
  • There is no need to get the pipe welded to the flange, which saves a lot of time.
  • They are designed to withstand big shocks, vibrations, and pressure changes.

Product Tags

Carbon steel flanges Stainless steel flanges Blind flanges Threaded flanges Socket-weld flange Slip-on flange Lap joint flange Weld neck flange Specialty flange Orifice Flange 1/2″ flange 48″ flange 15mm flange 1200 mm flange 150# flange 300# flange 600# flange 900# flange 1500# flange 2500# flange Raised Face RF Ring Type Joint RTJ Flat Face FF Male & Female M&F Tongue Groove T&G SCH 10 flange SCH 20 flange SCH 30 flange SCH 40 flange SCH 60 flange SCH 80 flange SCH 100 flange SCH 120 flange SCH 140 flange SCH 160 flange SCH STD SCH XS SCH XXS SCH 10s SCH 40s SCH 80s ASME B16.1 ASME B16.5 flanges supplier malaysia ASME B16.20 ASME B16.21 ASME B16.24 ASME B16.34 ASME B16.36 ASME B16.42 ASME B16.47 MSS SP-6 MSS SP-9 MSS SP-25 MSS SP-44 MSS SP-53 MSS SP-54 MSS SP-55 MSS SP-75 MSS SP-106 API 605 API 6A API 6B ASME SA/A105N ASTM ASTM A694 F42 ASTM A694 F46 ASTM A694 F52 ASTM A694 F60 ASTM A694 F65 ASTM A694 F70 ASTM A707 L1 ASTM A707 L2 ASTM A707 L3 ASTM A707 L4 ASTM A707 L5 ASTM A707 L6 ASTM A707 L7 ASTM A707 L8 ASME/ASTM SA/A350 LF1 ASME/ASTM SA/A350 LF2 ASME/ASTM SA/A350 LF3 ASME/ASTM SA/A350 LF6 ASME/ASTM SA/A182F2 ASME/ASTM SA/A182F5 ASME/ASTM SA/A182F9 ASME/ASTM SA/A182F11 ASME/ASTM SA/A182F12 ASME/ASTM SA/A182F22 ASME/ASTM SA/A182F91 ASME/ASTM SA/A182F304/304L ASME/ASTM SA/A182F316/316L ASME/ASTM SA/A182F309 ASME/ASTM SA/A182F310 ASME/ASTM SA/A182F304H ASME/ASTM SA/A182F310H ASME/ASTM SA/A182F317/317L ASME/ASTM SA/A182F321 ASME/ASTM SA/A182F321H ASME/ASTM SA/A182F347 ASME/ASTM SA/A182F347H ASME/ASTM SA/A182F904L UNS S31803 UNS S32205 UNS S32750 UNS S32760 ASME/ASTM SA/A182F51 ASME/ASTM SA/A182F53 ASME/ASTM SA/A182F55 ASME/ASTM SA/A182F60 ASME/ASTM SB564 UNS N02200 (Nickel 200) UNS N02201 (Nickel 201) UNS N04400 (Monel 400) UNS N06600 (Inconel 600) UNS N06601 (Inconel 601) UNS N06625 (Inconel 625) UNS N08810


Blind Flange, Slip on Flange, Welding Neck Flange, Socket Weld Flange, Threaded Flange, Lap Joint Flange, Anchor Flange, Orifice Flange

Size Range

1/2" (15mm) - 48" (1200mm)


150#, 300#, 600#, 900#, 1500#, 2500#

Type Available

Raised Face RF, Ring Type Joint RTJ, Flat Face FF, Male & Female M&F, Tongue Groove T&G


SCH 10, SCH 20, SCH 30, SCH 40, SCH 60, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160


SCH 10s, SCH 40s, SCH 80s


ASME B16.1, ASME B16.5, ASME B16.20, ASME B16.21, ASME B16.24,

ASME B16.34, ASME B16.36, ASME B16.42, ASME B16.47

MSS SP-6, MSS SP-9, MSS SP-25, MSS SP-44, MSS SP-53, MSS SP-54, 

MSS SP-55, MSS SP-75, MSS SP-106

API 605, API 6A, API 6B


Carbon Steel


High Yield Carbon Steel

ASTM A694 F42/ 46/ 52/ 60/ 65/ 70

ASTM A707 L1~ L8

Low Temp Carbon Steel

ASME/ASTM SA/A350 LF1/ 2/ 3/ 6

Chrome Moly

ASME/ASTM SA/A182F2, F5 ,F9, F11, F12, F22, F91

Stainless Steel

ASME/ASTM SA/A182F304/304L, 316/316L, 309, 310, 304H, 310H, 317/317L, 321, 321H, 347, 347H, 904L

Duplex/ Super Duplex

UNS S31803, S32205, S32750, S32760
ASME/ASTM SA/A182F51, 53, 55, 60

Nickel Alloy

UNS N02200 (Nickel 200), UNS N02201 (Nickel 201)
UNS N04400 (Monel 400), ), UNS N06600 (Inconel 600)
UNS N06601 (Inconel 601), UNS N06625 (Inconel 625)
UNS N08810 (Incoloy 800H), UNS N08811 (Incoloy 800HT)
UNS N08825 (Inconel 825), UNS N010276 (Hastelloy C276)


HIC, PED 2014/68/EU, NACE MR0175, NORSOK, Weld Overlay available

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