Carbon Steel Concentric Reducer
Carbon steel concentric reducers keep the centreline aligned when changing pipe diameter on welded lines. Typical on vertical runs, pump discharges, and layout-critical transitions. Quoted and sold per piece.
Choose a size below and add it to your quote.
Available Sizes & Finishes
28 sizes available
Filters
Size A (mm)
Size B (mm)
Thickness (mm)
Applications & Selection Guide
Carbon steel concentric reducers to EN 10253 / ASME B16.9, joining two pipe diameters on a common centreline with bevelled ends for butt welding. The symmetric cone keeps flow evenly distributed around the full circumference.
Concentric reducers are the default diameter transition in vertical lines and in horizontal lines where a level pipe soffit is not required: pump discharge sides, header steps, and general distribution. On horizontal pump suction lines, use an eccentric reducer instead to avoid trapping air at the top of the pipe. Size combinations (large OD × small OD) are in the table above.
Quoted and sold per piece. Send both ODs, quantity, and delivery country in a quote request; unlisted combinations can often be sourced on request.
Technical guides
Pipe schedule chart: Sch 40 and Sch 80 sizes, wall thickness and weight (NPS ½" to 24")
Steel pipe schedule chart for NPS ½" to 24": outside diameter, Schedule 40 and Schedule 80 wall thickness and weight per metre to ASME B36.10M, what NPS, DN and schedule mean, and metric EN equivalents.
Read the guide →Butt-weld fittings dimensions: elbows, tees, reducers and caps to ASME B16.9 and EN 10253
Centre-to-end dimensions of 90° and 45° elbows, equal tees, reducers and caps to ASME B16.9 for NPS ½" to 24", long and short radius elbows, concentric and eccentric reducers, and how EN 10253 fittings differ.
Read the guide →Product Information
Material Grade
Carbon steel
Manufacturing Standard
EN 10253 / ASME B16.9
Material Type
Steel
Category
Concentric Reducer
Ready to request pricing?
Add sizes to your quote cart, or paste your full list — Excel, CSV, or plain text.