1987 Foundation of Erdeljan Verbindungstechnik GmbH. In the beginning, the office is located in the residential house, garage and basement serve as storage space.

1990 Relocation to a 700 m²-commercial building in Mühlweg, Schwenningen. The product range is extended to include cutting ring fittings, thread fittings, flanges and welding fittings.

1991 Establishment of a trading firm in Duisburg. The product range is complemented by stainless steel pipes.

1994 Establishment of the first sister company in Bremen. Enlargement of product range and storage capacity: Production of hoses on our own pressing machine.

1998 Relocation from Mühlweg to Sturmbühlstraße in Villingen-Schwenningen. On more than 2.000 m² storage area and 500 m² office space, there is enough room to include steel cutting ring fittings in the product range.

2001 Establishment of the second sister company in Tettnang. Erdeljan business activities now include fittings for beverage plants.

2002 The Erdeljan turning shop featuring the latest CNC machines for highest precision in stainless steel is established.

2003 Establishment of a further sister company in Hattingen along with the acquisition of the fitting stockpile of Woeste. Extension of product range and stock to include steel fittings.

2005 Further stock extension to include stainless steel press fittings for water and gas.

2006 Management of the company is handed over to Michael Erdeljan.

2007 Acquisition of a full-scale turning shop and establishment of iSi-Tec as well as extension of our range of turned parts.