Dab tsi yog qhov sib txawv ntawm cov yeeb nkab steel thiab steel raj?

Tib neeg feem ntau xav tias ob qho tib si tib yam. Lawv ob leeg tuaj yeem ua seamless lossis welded. Txawm li cas los xij, muaj qhov sib txawv tseem ceeb ntawm cov yeeb nkab steel thiab steel raj. Ib lub raj yog puag ncig. Lub raj tuaj yeem yog puag ncig, square, duab plaub, lossis oval hauv cov duab. Cov kav dej feem ntau yog tsim los nqa cov kua thiab roj, tsis hais txog kev lag luam uas lawv tau xa mus. Cov raj tuaj yeem thauj cov kua dej thiab cov pa roj, tab sis feem ntau yog tsim los rau ntau daim ntawv thov ntau dua li cov yeeb nkab, suav nrog kev lag luam, kev kho mob, aerospace, tub rog, kev thauj mus los, architecture, thiab kev tsim kho.