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FLANGE STANDARD LIBRARYAX FORGE · SPEC SHEET
SPEC SHEETNo. 100
ASME B16.47 Series A · ASME B16.47-2025

B16.47 A Class 150 56″ Weld Neck

DN1400Weld NeckDimensions mmWeight kg
ASME B16.47 Series A · 56″ (DN1400) · Class 150 · Weld Neck FlangeASME B16.47 Series A · 56″ (DN1400) · Class 150 · Weld Neck Flange O.D. D 1746.0 Bolt circle K 1651.0 48×Ø47.6 Raised face Ø 1575.0 Thickness C 122.4 RF height f 1.5 Length H 227.0 Hub Ø A 1457.0 Weld end Ø 1422.4 Both views share one scale (1:28); schematic only Unit: mm

Schematic — drawn from the table, not to scale for inspection.

SymbolItemValue
DOutside diameter1746mm
CFlange thickness / blind thickness122.4mm
D2Raised face diameter1575mm
fRaised face height1.5mm
KBolt circle diameter1651mm
nNumber of bolt holes48pcs
dBolt hole diameter47.6mm
AHub diameter1457mm
HHub length / overall length227mm
BWelding-end diameter1422.4mm
—Approximate weight798kg

Pressure–temperature ratings · Class 150 · Group 1.1

≤ 38 °C19.6 bar50 °C19.1 bar100 °C17.7 bar150 °C15.8 bar200 °C13.8 bar250 °C12.1 bar300 °C10.2 bar325 °C9.3 bar350 °C8.4 bar375 °C7.4 bar400 °C6.5 bar425 °C5.5 bar450 °C4.6 bar475 °C3.7 bar500 °C2.8 bar538 °C1.4 bar

Source: Table 3 (p. 14) — pressure–temperature ratings for Group 1.1 materials, SI units; Group 1.1.

Material and notes

Base material: ASTM A105 (North America, Middle East)

Rating: Series A follows the former MSS SP-44 dimensions. Ratings are ASME classes 150, 300, 400, 600 and 900, with allowable pressures read from the B16.47 pressure–temperature tables for the material group and design temperature.

Tolerances / marking: Tolerances, material and marking: ASME B16.47-2025. Series A and Series B are not interchangeable.

Notes / special requirements

Work order Inspector Date Travels with the part; file after inspection