Experimental and theoretical approaches towards the study on stress corrosion cracking (SCC) of pipeline steel have been performed. The subject of investigations included SCC susceptibility of API X-60 pipeline steel at various testing conditions in the soil containing water, hydrogen concentration in the steel an the role of hydrogen in cracking process. SCC tests are mainly conducted using slow strain rate testing (SSRT) and sustained load test of single-edge cracked sample. The results showed that ...