MS Flange

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What is Flange

A flange is a type of flat, usually circular piece of material, typically made of metal or plastic, which has a series of holes around its perimeter. Flanges are often used to connect two pipes or pieces of equipment together, and can also be used to provide a mounting surface for other components or to strengthen a structure. They are often designed with a raised lip, or rim, around the edge to help align and secure the connection, and can be bolted, welded, or clamped in place. Flanges are commonly found in industrial, automotive, and aerospace applications, and can be used for a variety of purposes, including sealing, flow control, and structural support.



Types of Flange Materials

Flanges can be made from a wide range of materials depending on the specific application, operating conditions, and environmental factors. Some common materials used for flanges include:

  1. Carbon steel: This is a popular material for flanges due to its strength, durability, and affordability.

  2. Stainless steel: This material is commonly used in applications where resistance to corrosion or high temperatures is required.

  3. Alloy steel: Flanges made from alloy steel offer higher strength and better resistance to corrosion and wear compared to carbon steel.

  4. Brass: This material is often used in applications where a good balance of strength, corrosion resistance, and cost is required.

  5. Plastic: Flanges made from materials such as PVC, polypropylene, or PTFE are often used in applications where resistance to chemicals or high temperatures is required.

  6. Cast iron: This material is commonly used for low-pressure applications such as water distribution systems.


Types of Flanges

There are many types of flanges available, each designed for specific applications and operating conditions. Here are some of the most common types of flanges:

  1. Weld Neck Flange WNRF: This is a circular flange that is welded to the neck of a pipe, providing a high-strength, permanent connection.


  2. Slip-On Flange SORF: This flange slides over the end of a pipe and is then welded in place, making it easy to install and remove.


  3. Blind Flange BLRF: This is a flat, circular flange with no center hole, used to block off a pipe or fitting.


  4. Threaded Flange: This flange has internal threads that allow it to be screwed onto a threaded pipe or fitting.


  5. Socket Weld Flange SWRF: This flange is similar to a slip-on flange, but has a socket-like recess that fits over the pipe end, providing additional strength and stability.


  6. Lap Joint Flange LJFF: This flange is used in conjunction with a lap joint stub end, allowing the flange to rotate freely around the stub end and providing easy alignment during installation.

  7. Orifice Flange: This flange is designed for use with orifice plates, which are used to measure the flow rate of fluids.

  8. Spectacle Blind Flange: This flange is made up of two metal discs, with a spacer in between, and is used to isolate sections of a pipeline for maintenance or repair.


Flange Standards and Code

Flanges are designed and manufactured to meet specific standards and codes, which ensure that they are safe, reliable, and compatible with other equipment and components in a system. Here are some of the most common standards and codes for flanges:

  1. ASME B16.5: This standard covers the dimensions, materials, and testing requirements for steel pipe flanges and flanged fittings.

  2. ASME B16.47: This standard covers the larger size steel pipe flanges (NPS 26 through NPS 60) and their corresponding flanged fittings.

  3. API 6A: This standard covers flanges and related equipment used in the petroleum and natural gas industries.

  4. EN 1092: This European standard covers flanges and their joints for use with PN designated flanges.

  5. JIS B2220: This Japanese standard covers steel pipe flanges for use in general industrial applications.

  6. MSS SP-44: This specification covers steel pipe flanges for high-pressure, high-temperature, and high-corrosion applications.

  7. ASTM A182: This specification covers forged or rolled alloy-steel pipe flanges, forged fittings, and valves and parts for high-temperature service.

MS Flange SORF Price List

Pipe

Flange Data

Raised Face

Drilling Data

Price/PC in Rs.

Nominal Size (Inch)

OD of Pipe (mm)

OD of Flange (mm)

ID (Bore) of Flange (mm)

Flange Thickness (mm)

Face Dia. (mm)

Nos. of Holes

Hole Diameter (mm)

PCD of Hole (“mm)

1/2″

21.3

89

22.5

11.2

35

4

15.7

60.45

60.00

1″

33.4

108

34.5

14.2

51

4

15.7

79.25

104.00

1.1/2″

48.3

127

49.5

17.5

73

4

15.7

98.6

196.00

2″

60.3

152

62

19.1

92

4

19.1

120.7

205.00

2.1/2″

73

177

74.7

22.4

104.5

4

19.1

139.7

380.00

3″

88.9

190.5

90.7

23.9

127

4

19.1

152.4

430.00

4″

114.3

228.5

116

23.9

157

8

19.1

190.5

650.00

5″

141.3

254

144

23.9

186

8

22.4

215.9

870.00

6″

168.3

279

170.7

25.4

216

8

22.4

241.3

900.00

8″

219.1

343

221.5

28.4

270

8

22.4

298.5

 1500.00

10″

273

406

276.3

30.2

324

12

25.4

362

 2100.00

12″

323.8

482

327

31.75

381

12

25.4

431.8

 3100.00

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