Cov txheej txheem yog yooj yim, tso ceev ceev heev, tus nqi ntawm kev puas tsuaj thiab tus nqi ntawm kev saib xyuas tom qab yog tsawg, raws li ntev raws li qhov sib koom ua ke zoo, nws muaj peev xwm tiv taus lub axial load yam tsis muaj to thiab disengagement. Yog li ntawd, thaum nteg Tsis muaj cov ntsiab lus thauj tog rau nkoj, pob tw, thiab lwm yam yog xav tau ntawm cov pob qij txha thiab khoov, thiab tus nqi tuaj yeem txo qis. Nyob rau tib lub sijhawm, nws qhov kev hloov pauv tau zoo heev, lub vojvoog dabtsi yog khoov tuaj yeem ncav cuag 20 mus rau 25 npaug ntawm cov yeeb nkab txoj kab uas hla, ntxiv rau kev khawb kuj zoo, nws yooj yim heev rau txav thaum tso, tuaj yeem hloov mus rau ntau yam kev tsim kho, thiab muaj muaj zog adaptability rau lub pipeline foundation.
