SIGMA-Li since 1995 as one of the first firms in Poland took up the production of fittings and connectors from polypropylene. Sigma-Li is a firm with Polish capital and currently employs almost 100 employees. We produce about 240 sorts of assortment: fittings and connectors with brazen threads, ball valves and sunk volves, underfloor heating distributors, skew filters, construction for heaters etc. Constantly growing market demand for specialist tools to the system welded from polypropylene contributed to the broadening of production by SIGMA-Li in 2005. The firm started to produce a welding machine designed to join by thermal polyfusion with the power of 800 W and 1400 W, heating caps 16 to 75 FI in diameter, roughing lathes to stabilized pipes.
We posses a modern machine park of injection molding machine of leading German producer, firm ARDBURG, machining centers, automatic lathes. Moreover the firm has its own design office with the fully equipped tool-room. The firm has implemented the Quality Management System ISO 9001: 2000, our products are manufactured according to European norms and they all have necessary technical approvals, conformity declarations, sanitary certificates and insurance certificates.