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Dimension chart · ASME B16.9 · EN 10253-1

Butt-weld reducer DN 32 × DN 25 (1¼" × 1"): dimensions and references

Butt-weld reducer DN 32 × DN 25 (1¼" × 1"), OD 42.4 / 42.2 × 33.7 / 33.4 mm: the dimensions in both standards, wall, weight and the 12 available references.

ASME B16.9 and EN 10253-1 dimensions

Dimensioned drawing of a butt-weld concentric reducer
H: end-to-end length. OD1: large end, OD2: small end. T1: small end wall, T2: large end wall. Left, conical reducer; right, with rounded transitions.
ASME B16.9EN 10253-1
Large end OD (mm)42.242.4
Small end OD (mm)33.433.7
Length (mm)51 (H)form 2: 51 · form 1: 51
Wall large / small end (mm)STD 3.56 / 3.38 · XS 4.85 / 4.552.6 / 2.6 (S235)
Indicative weight (kg)STD 0.15 · XS 0.20form 2: 0.20 · form 1: 0.10

Dimensions in mm. Tolerances and definitions in the full chart.

Mind the outside diameter: 42.4 mm to EN 10253-1 (EN 10220 series), 42.2 mm to ASME B16.9 (ASME B36.10 series). Choose the fitting in the series of the pipe.

Available references

ReferenceStandardItemWallGradeFinishMake
RCS4233STDPASME B16.9Butt-weld concentric reducerSTDA234 WPBPaintedSeamless
RCS4233XSPASME B16.9Butt-weld concentric reducerXSA234 WPBPaintedSeamless
RES4233STDPASME B16.9Butt-weld eccentric reducerSTDA234 WPBPaintedSeamless
RES4233XSPASME B16.9Butt-weld eccentric reducerXSA234 WPBPaintedSeamless
R1S4233GEN 10253-1Butt-weld concentric reducer, Form 12.6 / 2.6S235GalvanizedSeamless
R1W4233GEN 10253-1Butt-weld concentric reducer, Form 12.6 / 2.6S235GalvanizedWelded
R1S4233NEN 10253-1Butt-weld concentric reducer, Form 12.6 / 2.6S235BlackSeamless
R1W4233NEN 10253-1Butt-weld concentric reducer, Form 12.6 / 2.6S235BlackWelded
R2S4233GEN 10253-1Butt-weld concentric reducer, Form 22.6 / 2.6S235GalvanizedSeamless
R2W4233GEN 10253-1Butt-weld concentric reducer, Form 22.6 / 2.6S235GalvanizedWelded
R2S4233NEN 10253-1Butt-weld concentric reducer, Form 22.6 / 2.6S235BlackSeamless
R2W4233NEN 10253-1Butt-weld concentric reducer, Form 22.6 / 2.6S235BlackWelded

12 references of this size in the catalog. Click a reference for its page and to add it to your quote.

See the whole catalog → All references of the family

Other sizes

Frequently asked questions

How long is a 1¼" × 1" reducer?

51 mm to ASME B16.9, concentric or eccentric. To EN 10253-1 form 2: 51 mm.

Which finishes are available for this fitting?

In the catalog: black, galvanized, painted. EN 10253-1 fittings in S235 come black or galvanized; ASME B16.9 fittings in A234 WPB are delivered painted.