Flanges

Slip-On Flanges

Slip-On Flanges are installed by fitting the flange over the pipe and welding at the hub/end. BCUBE manufactures, sources and supplies Slip-On Flanges to applicable project specifications.

Technical Parameters

  • NPS/NB and pressure class or PN rating
  • Flange outside diameter, thickness and bore
  • Bolt circle/PCD, number and diameter of bolt holes
  • Raised face, flat face or other specified facing
  • Pipe bore and fit-up requirements
  • Material and grade
  • Applicable flange standard and edition
  • Marking, dimensions, tolerances and testing

Primary Flange Standard

For standard steel flanges in NPS 1/2 through NPS 24, ASME B16.5-2025 is the current ASME edition. It covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing and designation of openings. It includes Class 150, 300, 400, 600, 900 and 1500 flanges through NPS 24, plus Class 2500 through NPS 12. citeturn0search0turn0search5

For large-diameter steel flanges NPS 26 through NPS 60, ASME B16.47-2025 is the current edition and covers Classes 75, 150, 300, 400, 600 and 900. citeturn0search14turn0search3

Materials & Grades

BCUBE can evaluate Mild Steel, Carbon Steel, Alloy Steel and Stainless Steel flange requirements in grades applicable to the selected material and flange specification. Material selection must match the pressure, temperature, corrosion and project requirements.

Dimensions & Rating

Flange pages will organize technical information around nominal size, pressure class/PN rating, facing, bore, outside diameter, thickness, bolt circle, bolt-hole count/diameter and other product-specific dimensions. Numerical tables will be added after specification-by-specification verification.

Current, Previous & Project-Specified Editions

BCUBE's standards database will distinguish current editions from previous/historical editions. ASME B16.5, for example, has historical editions including 2020, 2017, 2013, 2009 and earlier versions. citeturn0search18 A project specifying an older edition should be evaluated against that requirement rather than silently substituted with the latest edition.

Manufacturing & Sourcing

BCUBE supports both manufacturing and sourcing. Requirements can be evaluated from flange type, size, class/PN, facing, bore, material, grade, standard, drawing and quantity.

Testing, Certification & Inspection

Applicable dimensional, visual, material and pressure-related testing will be described according to the governing specification. EN 10204:3.1 material certificates and Indian or international third-party inspection can be supported where required.

Applications

Oil & gas, EPC projects, chemical and petrochemical plants, power plants, water treatment, industrial equipment, fabrication, infrastructure and general industrial piping, subject to the selected flange specification and service requirements.

Related Products

Slip-On Flanges · Weld Neck Flanges · Blind Flanges · Threaded Flanges · Socket Weld Flanges · Lap Joint Flanges · Spectacle Flanges · Orifice Flanges

Technical accuracy note: Exact class/PN rating, size, facing, bore, dimensions, material grade and standard edition must be confirmed against the client's drawing, purchase specification and project requirements.
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