Octagon Muhendislik manufactures parts for drilling rigs like Atlas Copco-Epiroc, Sandvik-Tamrock, Montabert and Furukawa. HL500 / HL510 / HL538 / HL600 / HL650 / HL700 / HL710 / HL800 / HL810T / HL820T / HL1000 / HL1010 /HL1500 / HL1560/ HL1560T / RD520 / RD525 / HLX5 / HLX5T / HFX5T / RDX5 / HF820T / HF810T / HL300 / HL800T AXERA D06 / AXERA D07 / RANGER 600 / RANGER 700 / DD321 / DX700 / DX800 / DD311 / DD320S / DL421 / DD310 / DD320S / DD321-40 / DD210 / DD420 / DD421 / DD422 / DI500 / DI550 / DL210 / DL310 / DL311 / DL321 / DL421 / DL430 / DL431 / DL432 / DP1100 / DP1500 / DS310 / DS311 / DS410 / DS411 / DS412 / DS420 / DS421 / DS422 / DS510 / DS511 /DT621 / DT721 / DT820 / DT821 / DT912 / DT921 / DT922 / DX500 / DX680 / PANTERA 1100 / PANTERA 1500 / RANGER 500 / RANGER 680 / RANGER 780 / RANGER DX500 / RANGER DX600 / RANGER DX700 / RANGER DX800 / RANGER DX900 /