PT Petronesia Benimel engages in construction services for various earthworks, civil works, oil and gas infrastructure, mining infrastructure, site development, mechanical, piping, electrical construction, and instrumentation. PT Petronesia Benimel has been involved in a wide range of infrastructure projects across Indonesia, including the Trans-Sumatra Toll Road (JTTS).

PT Bhirawa Steel specializes in producing high-quality rebar and uses the latest technology. Bhirawa Steel has supplied rebar for prestigious projects such as the Trans-Sumatra Toll Road (JTTS) and other toll roads in Java, as well as other national strategic projects. In addition to supporting rebar availability in Indonesia, PT Bhirawa Steel also exports to various countries in Asia and Australia.

PT Semen Indogreen Sentosa focuses on the production of ready-mix concrete and precast. Over the years, HKSIS has engaged in retail sales, participated in private projects, and collaborated with state-owned construction companies (BUMN Karya). Additionally, HKSIS has contributed to the National Strategic Projects (PSN), including the completion of the Trans-Sumatra Toll Road (JTTS).

PT Hutama Mambelim Trans Papua (HMTP) is a company formed by a consortium between PT Hutama Karya (Persero) and PT Hutama Karya Infrastruktur (HKI) in 2024. PT HMTP acts as the Project Implementing Agency (PIA) for the Public-Private Partnership (PPP) project of the Trans Papua Road Development, specifically for the Jayapura-Wamena segment of the Mamberamo-Elelim area in the Mountain Papua Province, stretching 50.14 km.