Stainless steel concentric reducers 1.4571 / 316Ti

Stainless steel concentric reducers 1.4571 / 316Ti are pipe fittings that join two pipes of different diameters while keeping the same centreline (concentric). They are commonly used to transition between pipe sizes in welded piping systems, ensuring smooth flow for liquids, gases or vapours and reducing turbulence in process and utility lines.

What is 1.4571 / 316Ti and why it matters

The designation 1.4571 refers to the European EN number for a titanium‑stabilised austenitic stainless steel widely known as 316Ti. This grade is a version of 316 stainless steel with a small addition of titanium to stabilise carbon and reduce the risk of intergranular corrosion after exposure to elevated temperatures (for example during welding or heat treatment). In practical terms, 316Ti combines the corrosion resistance of 316 with improved stability after high‑temperature exposure.

Material properties in plain English

• Corrosion resistance: very good general resistance to corrosion in many environments, including many chemicals and marine atmospheres.
• High‑temperature stability: titanium stabilisation helps maintain resistance to corrosion after welding or heat exposure.
• Hygienic and easy to clean: austenitic stainless steels are commonly used where cleanliness matters (food, beverage, pharmaceutical).

Typical forms and installation

These fittings are most often supplied as butt‑weld concentric reducers for welded pipework, but can also be made to match flange or socket weld connections where required. They are manufactured to fit both metric and imperial pipe dimensions so they integrate easily with existing systems. Concentric reducers keep the pipe centreline continuous, making them the preferred choice where flow symmetry or pump suction integrity is important.

Where concentric reducers 1.4571 / 316Ti are used

Concentric reducers in 1.4571 / 316Ti are used across a wide range of sectors, for both small and large projects:

• Food and beverage processing and breweries (hygienic pipework)
• Pharmaceutical and chemical plants (corrosion and contamination resistance)
• Oil & gas and offshore applications (marine corrosion resistance)
• Power generation and utilities
• HVAC and mechanical services (pumping systems, condensate lines)
• Shipbuilding and marine engineering
• Automotive and industrial process piping
• Construction and building services, and even garage or workshop pipe projects

Who should choose these reducers

• Mechanical and piping engineers specifying durable, corrosion‑resistant fittings
• Fabricators and welding contractors who need stable material when working at elevated temperatures
• Maintenance teams and procurement managers replacing worn or corroded fittings
• Any buyer looking for sanitary, long‑lasting pipe transitions in aggressive or hot environments

Installation and welding notes

316Ti is chosen partly because titanium stabilisation reduces the risk of sensitisation around welded joints. Typical welding methods include TIG (GTAW) and MIG/MAG (GMAW) using appropriate matched filler materials. Because the grade resists intergranular attack, post‑weld annealing is generally not required for most service conditions — however always follow project specifications and accepted piping codes for welding and testing.

Ordering, sizes and custom options

We supply stainless steel concentric reducers 1.4571 / 316Ti in standard sizes to match common pipe schedules, and can also offer made‑to‑order dimensions, thicknesses or special machining on request. If you need help selecting the right reducer size, schedule or joint type (butt‑weld, socket, etc.), contact our technical team with the pipe diameters, pressure/temperature conditions and media.