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Pipe Flanges

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We are a renowned name in manufacturing of pipe flanges, forged pipe flanges. We use latest technology and comprehensive quality control systems in manufacturing our products so that our customers get exactly what they want on customised requests.

ANSI Standard Flanges | DIN Standard Flanges | JIS Standard Flanges | BS Standard Flanges


Summary of material used for flanges
MATERIALASME/ANSI B16.5ASME B16.47
SERIES A (MSS SP-441
ASME B16.47
SERIES B (or API 6052)
BS 4504BS 3293BS 103
Forging(ASTM A182)------
Plate (ASTM A240)4------
Bar5------
Casting6------


Note :
  • MSS SP-44 flanges are designated series A flanges in ASME B16.47.
  • API 605 has been cancelled. API 605 flanges are designated series B flanges in ASME B16.47.
  • BS 10, although obsolete, remains in use for light weight economy stainless steel flanges.
  • Within specification ANSI B16.5, plate can only be used to provide blind flanges.
  • Most small BS 10 flanges are made from bar.
  • Castings are not included in this manual.
Materials:
Most standard specify the material from which the flanges is produced. The purchaser should specify the exact requirements.
Flange Size:
All sizes and grades compatible to standard pipe flanges and wall thicknesses (pressure ratings) are available. The table bellow provides a summary.
Flange Face:
There are various face configurations for flanges. Typically: flat face, raised face, tongue and groove, and ring joint.
Face Finish:
The finish on the face of a flange is measured as an Arithmetical Average Roughness Height (AARH). The finish is determined by the standard used. For example, ANSI B16.5 specifies face finishes within a range 125AARH - 500AARH (3.2 Ra to 12.5 Ra). Other finishes are available on request, for example 1.6 Ra Max. 1.6/3.2 Ra, 3.2/6.3 Ra or 6.3/12.5 Ra. The range 3.2/6.3 is most common.


Summary of flanges size specified by common standards
FLANGE TYPEASME/ANSI B16.5ASME B16.47
Series A (or MSS SP-441)
ASME B16.47
Series B (or API 6052)
BS 4504
(ISO 7005-1)
BS 3293
Nominal Pipe Sizes







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