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Oil & Gas · Flange Engineering Reference in colabration with (rigzone pvt ltd)

Flange Calculator

NPS and Pressure Class are the primary selectors. The calculator now loads dimensional data instead of displaying “Reference table required” for the standard flange fields. Select flange type, facing, schedule and material to generate the complete reference record.

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Data basis: Standard flange dimensions are keyed by NPS + Class. Landee publishes ASME B16.5 product tables with the same dimensional fields (OD, flange thickness, hub dimensions, bore, bolt circle, bolt holes and bolting); the dimensional backbone below is cross-checked against published ASME B16.5 reference tables. Manufacturer-specific bore/finish details can vary with schedule and product configuration, so the selected basis is shown in the result.

Dynamic Engineering Diagram

Complete Reference Table

Every standard NPS/Class combination available in the ASME B16.5 range. Class 900 starts at NPS 3; Class 2500 ends at NPS 12.

NPSDNClassTypeFacingScheduleMaterialODThicknessWN BoreSO BorePCDBoltsBolt Hole ØRF ØRF HeightHub Base ØHub Top ØWN LTHSO LTHBasis
Use this as an engineering reference interface. Final fabrication, procurement and installation must be checked against the governing edition of ASME B16.5, applicable pipe schedule standards and the certified manufacturer drawing. Landee's product pages are manufacturer-specific references, while the standard dimensional pattern is controlled by ASME B16.5.
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