Stainless Steel Bushings – Threaded Reducing Bushings for Pipe Connections
ULAMEX supplies stainless steel bushings for industrial piping systems, hydraulic installations, process engineering, and general mechanical assembly. A stainless steel bushing – also known as a reducing bushing or pipe bushing – is a threaded fitting used to connect two pipes or fittings of different diameters within the same pipeline. The bushing features a male thread on the outside and a female thread on the inside, allowing it to reduce the connection size from a larger fitting to a smaller pipe. Our stainless steel reducing bushings are manufactured from austenitic grades 304 (1.4301) and 316L (1.4404), machined to tight tolerances, and produced in accordance with ISO 4144 and DIN 2999 thread standards. Available in sizes from DN 8 (1/4″) to DN 100 (4″), ULAMEX stainless steel pipe bushings serve as essential transition fittings wherever a size reduction is required without modifying the existing pipework.
As a dedicated B2B wholesale supplier since 1988, ULAMEX delivers stainless steel bushings across Europe with typical lead times of 2-5 working days. Whether you are assembling a chemical processing line, retrofitting a food-grade sanitary system, or maintaining hydraulic equipment, our bushings provide reliable, corrosion-resistant pipe size transitions that meet the highest industrial standards.
Material Properties – Grade 304 and 316L
Choosing the right stainless steel grade for your bushings is critical, as the operating environment determines the level of corrosion resistance required. ULAMEX stocks bushings in both standard austenitic grades to cover the full range of industrial applications:
| Property | Grade 304 (1.4301) | Grade 316L (1.4404) |
|---|---|---|
| Werkstoff number | 1.4301 | 1.4404 (low carbon) |
| AISI designation | AISI 304 | AISI 316L |
| EN designation | X5CrNi18-10 | X2CrNiMo17-12-2 |
| Chromium content | 17.5-19.5 % | 16.5-18.5 % |
| Nickel content | 8.0-10.5 % | 10.0-13.0 % |
| Molybdenum content | – | 2.0-2.5 % |
| Carbon content (max) | 0.07 % | 0.030 % |
| Tensile strength | 500-700 MPa | 500-700 MPa |
| Operating temperature | -196 to +300 C | -196 to +300 C |
| Corrosion resistance | Good – freshwater, atmospheric, mild chemical | Excellent – chloride, marine, acid, pharmaceutical |