Koj qhov kev txhawj xeeb yog nkag siab, tab sis nws yuav yog me ntsis tsis tsim nyog.
Natural gas pipelines yog engineered tshwj xeeb nrog sealability thiab durability nyob rau hauv lub siab. Yog li ntawd, nyob rau hauv cov xwm txheej, yog hais tias lawv tsis ua rau muaj kev puas tsuaj loj heev, koj tuaj yeem tso siab rau lawv txoj haujlwm nyab xeeb thiab txhim khu kev qha.