Amashubhu wensimbi engenamthungo yokuqhekeka kaphethiloli

I-Sered njenge-Fumace Tumales, amashubhu wokushintshanisa ama-piplenes ku-petroleum kanye nezitshalo zokuhlanza

Kusetshenziswe ekwenziweni kwamapayipi odonga okhethwe amanzi, amapayipi abilayo amanzi, amapayipi amunca ama-superhesteated, amapayipi e-steate athule ama-boilog e-locomotive, amapayipi amnyama kanye nama-arch brise amapayipi, njll.

Insimbi esezingeni eliphakeme le-carbonccture; Insimbi ye-alloy yesakhiwo; Ukuvimbela Ukushiswa Kokushisa Kwensimbi