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Home Konstruksi Alat Berat Endorsement 219 – Conditions for Horizontal Directional Drilling of Pipeline Routes below Rivers, Railway Embankments, Streets, etc. – Endosemen 219 – Kondisi untuk Pengeboran Arah Horisontal Jalur Jaringan Pipa di bawah Sungai, Tanggul Jalur Rel, Jalan Raya, dsb.