Lub pneumatic crawler laum rig yog ib tiam tshiab ntawm crawler tus kheej-propelled laum rigs, feem ntau yog siv rau drilling hauv thee seams, dej tshawb nrhiav thiab tso tawm, thee seam dej txhaj tshuaj, thiab lub siab nyem qhov.
Yog tias koj txaus siab rau peb cov khoom, koj tuaj yeem xaiv tawm koj cov ntaub ntawv ntawm no, thiab peb yuav tiv tauj koj sai sai.