STELMA T.S.A. and the predecessor companies owned by Mr. El. Mamantzis are generally active in the Energy sector since 1980, having successfully completed a large number of technical projects, such as:
Natural Gas Pipelines
Through the Greek State Gas Distribution Company (DEPA SA) and other contractors such as EDIL and TOT GAS, STELMA has undertaken and successfully completed a series of particularly demanding and specialized projects, such as heat-shrinkable sleeves application, exterior pipeline wrapping/polyken tape, and sandblasting and application of specialized polyurethane and vinyl ester (glass flake-type) paints both on pipelines and on underground gas stations. Within the framework of its extended partnership with DEPA, in the recent past STELMA undertook and successfully completed work packages for excavations and installation of natural gas pipelines (Platamonas project).
Power Production Plants
Since 1970, the company’s founder and consequently the STELMA Group of Companies has been providing technical services to PUBLIC POWER CORPORATION SA of Greece plants (steam engine stations, hydroelectric stations, autonomous production stations in the Islands, local production stations, lignite excavation centres) throughout the Greek territory. STELMA’s continuous presence and the quality of its services have established it as one of the PPC’s most reliable and approved contractors.
The company has completed a large number of projects on surface anti-corrosion protection, industrial insulation and construction-engineering applications. In recent years, through its exclusive partnership with the German firm Steuler – KCH GmbH, STELMA has undertaken and successfully completed a large number of contracts on acid-proofing thermoplastic protection with the application of the state of the art BekaplastTM system, essentially resolving once and for all the problem of corrosion on the surfaces of channels, neutralization tanks, safety basins, silos, etc. from high-concentration and high-temperature acids and chemicals. In 2005-2006, our company actively participated, in collaboration with VATECH HYDRO GmbH και ENET S.A., in the construction project of the first private Combined Cycle Power Plant in Thessaloniki, owned by ELPEDISON POWER, with a capacity of 390 MW. Subsequently and up to 2010, the company undertook plant maintenance works both as a direct contractor of Elpedison Power and as a subcontractor for SIEMENS OSTERREICH, HAMWORTHY SERCK COMO, GENERAL ELECTRIC Corp, SPX COOLING TECHNOLOGIES and CMI S.A.
Power Transmission Pylons
Works completed by STELMA also include signage painting on power pylons owned for the Greek Independent Power Transmission Operator (ADMIE), and the relevant maintenance of them. Additionally, through its French branch, the company completed a paint restoration project on telecommunication poles owned by FRANCE TELECOM in five different cities in France. These projects are just an indication of the projects at height undertaken by STELMA T.S.A. Bearing in mind the strict safety – quality requirements of its Clients and based on its certification by both French and Greek competent bodies, the company with its specialized teams of alpinists has recently completed a large number of similar projects with absolute success and without any safety incident.