Srubena-Unia

Srubena-Unia is a fastener manufacturer with a production scope covering products made to customer drawings and technical documentation, as well as standard elements manufactured to norms including PN, DIN, EN, ISO, ANSI, BS, ASTM, and GOST. The company produces bolts, nuts, studs, threaded rods, and non-standard elements, with mechanical property classes ranging from 4.6 to 12.9 for bolts and 5 to 12 for nuts, and diameters from M5 to M56. Manufacturing is supported by cold and hot technologies, including multi-operational forging machines for hot and cold forged manufacturing, heat treatment lines, and hot forging friction presses. Quality and manufacturing certification include EN ISO 9001:2015 (Quality Management System), IATF 16949:2016 for automobile-related applications, and industry-specific certifications such as EN 14399 series and EN 15048 for steel & metal construction, plus pressure-connection quality assurance systems aligned with EN 764-5 and the Pressure Equipment Directive 2014/68/UE. The company serves industries including railway, power generation, agro, steel & metal construction, mining, chemical industry, and transport, and it applies surface finishing and protective processes such as oiling, black oxidation, phosphating, hot dip galvanising, flake coating, zinc plating, and rust-protective and lubrication coatings.

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