Butt Weld Reducers

Dimensions: 1/2" (21.3mm) → 24" (610.0mm)

Thickness: 2.8mm → 12.5mm

Steel Grade: P245GH, P265GH, 304L, 316L, WPB, WPL6, WP304L

Standard: EN 10253, ISO 3419, ASME B 16.9 / ASTM

Technical Documentation: 3.1/3.2 Certificate - EN 10204, Declaration of Conformity

If the type of reducer you are looking for is not listed among the models presented, we invite you to send us your technical specifications. The Titan Steel Trading team will review your requirements and provide a personalized offer tailored perfectly to your project.

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Description

The steel butt-weld reducer according to EN 10253, ISO 3419 and ASME B 16.9, ensures a smooth transition between two different pipe diameters. It is available in concentric (common axis for maintaining flow symmetry) and eccentric versions (offset axis for level control and preventing air/liquid pockets), covering small to large DN/NPS sizes and standard pressure classes, depending on material and execution.

Applications

Diameter adaptation in process/transfer lines for water, steam, oils, and technical gases; pump suction/discharge (concentric or eccentric alignment as required); O&G networks (onshore/offshore), petrochemical and refining units; power and district-heating plants; industrial utilities and modular skids (pumping/dosing); instrumentation (bypass, sampling); HVAC/industrial water/fire systems; marine and industrial equipment applications requiring mechanical strength and pressure/temperature integrity.

Key Advantages

Controlled diameter transition; concentric/eccentric options for axial alignment, proper drainage, and prevention of air pockets/cavitation.
High integrity and tightness through butt-weld joints and standardized wall thickness/tolerances.
Good interchangeability due to standardized dimensions (DN/NPS, PN/Class, EN/ISO/ASME compatibility).

Concentric and Eccentric Butt Weld Reducers - EN 10253, ISO 3419, ASME B 16.9

Informative dimensions and wall thicknesses for butt weld reducers, with outside diameters from 21.3 mm (1/2") to 610.0 mm (24").

DN	OD	NPS	Thickness (mm)
15	21.3	1/2"	2.0
20	26.9	3/4"	2.3
25	33.7	1"	2.6
32	42.4	1 1/4"	2.6
40	48.3	1 1/2"	2.6
50	60.3	2"	2.9
65	76.1	2 1/2"	2.9
80	88.9	3"	3.2
100	114.3	4"	3.6
125	139.7	5"	4.0
150	168.3	6"	4.5
200	219.1	8"	6.3
250	273.0	10"	6.3
300	323.9	12"	7.1
350	355.6	14"	8.0
400	406.4	16"	8.8
450	457.0	18"	9.5
500	508.0	20"	10.0
600	610.0	24"	11.0

Tags: reducers, carbon steel, stainless steel, weldable, concentric, eccentric, black, galvanized, 1/2–24 inches, sizes 21.3–610 mm, wall thickness 2.8–12.5 mm.

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