Putkistoin

Putkistoin is a Finnish term used in construction and plumbing to describe the process of designing, installing, and commissioning a building’s piping network (putkisto). It encompasses systems for water supply, drainage, gas lines, and in some cases climate- or process-related piping for industrial facilities and HVAC installations.

The practice includes planning and routing of pipes, selecting materials (such as copper, PEX, PVC, and stainless steel), integrating with other building systems, choosing fittings, valves, pumps, and insulation. It also covers fabrication, joining methods, installation, testing (including pressure and leak tests), and final commissioning of the piping network.

Key considerations in putkistoin include compliance with building codes and standards, safety and risk management, accessibility for maintenance, spatial constraints, thermal expansion, corrosion resistance, and hygiene requirements for potable water. The approach varies with project type and scope, from residential to commercial and industrial facilities, and often involves coordination with electrical, mechanical, and structural disciplines.

In Finland, putkistoin is guided by national regulations and European technical standards. Practice is shaped by the Rakentamismääräyskokoelma (Building Regulations) and relevant EN/SFS standards, along with project-specific specifications. The term appears in technical documentation, tendering, and contractor workflows as part of the broader putkisto design and installation process.