rörändar

Rörändar is a Swedish term used in plumbing and pipework to denote the ends of pipes that are prepared for connection to fittings, valves, or other pipes. The word combines rör (pipe) and ändar (ends) and appears in technical manuals, shop literature, and field documentation. In practice, rörändar describe the surfaces and geometries at the ends of piping components that enable a secure seal and structural join.

End preparation encompasses a range of configurations designed to suit different connection types. Common end types include threaded ends for screw connections, welded ends that are bevel prepared for welding, flanged ends for bolted joints, and plain or socket ends for couplings or push-fit systems. The choice of end geometry depends on the fluid, pressure, temperature, and required leak-tightness.

Rörändar are made from materials appropriate to their service, such as copper, steel, stainless steel, PVC, CPVC, PEX, or HDPE. Material selection affects corrosion resistance, durability, and compatibility with gaskets or sealants used in the joint. End preparation standards vary by region and material, with references to EN/ISO, DIN, ANSI/ASME, and ASTM specifications guiding dimensions and tolerances.

Applications span drinking water, gas, industrial processing, and heating systems. Proper deburring, cleaning, alignment, and adherence to relevant codes are essential to ensure a reliable connection and long service life. See also pipe fittings, flanges, couplings, and end caps.