Saudi Tunneling Company for Contracting, a subsidiary of Hassan Allam Construction Saudi, is proud to announce the successful maintain and renewal of our three ISO standard certifications: ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. We are delighted to have completed the Surveillance 1 stage, which was expertly conducted by the international certification body Intertek.


We always aim to provide our clients high-level services, superior quality, and unparalleled safety measures.