STSI has extensive experience in the maintenance of refinery plants, oil and gas plants, petrol stations, compressor stations and gas pipelines, as well as offshore platforms, drilling and workover rigs.
Thanks to the knowledge and experience in constructing plants and facilities in Croatia and abroad, on land and at sea, STSI offers the highest level of quality in meeting customer demands
STSI has accredited testing and calibration laboratories that are used for the provision of technical control and diagnostic services in the entire territory of the Republic of Croatia.
STSI adopts waste management and environmental protection principles through the performance of works for customers and procurement of adequate equipment, complying with environmental protection standards that are becoming more demanding, as well as market needs and legal obligations
STSI is a certified manufacturer of equipment in accordance with the HRN EN ISO 3834-2:2007 standard, pursuant to the Ordinance on pressure equipment of the Republic of Croatia (OG 79/16) and Directive 2014/68/ EU
STSI is authorized by the competent ministries to conduct testing of the process safety systems and to perform the professional activities of occupational health and safety
