As part of the final inspection, we perform both dimensional or hardness checks and for example ultrasonic tests in accordance with standards ČSN, EN, ISO, DIN, SEP, SEL, etc. according to customer requirements. Since 1998, the company has been regularly certified according to ISO standards and holds the TÜV Management Service quality certificate. Since 2017, our company also holds a certificate of technical qualification for deliveries to ČD, a.s.

Static (tensile test)
Dynamic (bend impact test)
Hardness tests (Brinell)

Macrostructure tests (Baumann method)
Microstructure tests (grain size,
micro-purity, evaluation of carbide phases)

Internal defects (ultrasonic inspection)
Surface defects (capillary tests, magnetic tests)

Spectrometric test


Based on customer requirements we also provide other types of tests in certified test laboratories.



The production possibilities of the TRIANGOLO forge are determined by applied technologies. From this perspective, we offer die forgings, rolled rings, forged shafts and open die forgings. We also provide heat treatment of steel and metallurgical materials, machining and ultrasonic testing.