Dab tsi yog lub tshuab txiav tsis siv neeg?

Tsis siv neeg txiav tshuab yog cov cuab yeej siv hluav taws xob siv hluav taws xob ntau uas siv cov khoom siv hluav taws xob thiab hluav taws xob, nrog rau cov yam ntxwv ntawm kev ua haujlwm yooj yim, hloov tau yooj yim, thiab lub zog muaj zog; Nws tuaj yeem ua cov txheej txheem txiav ntawm ntau yam hlau thiab cov khoom tsis yog xim hlau nrog cov thicknesses sib txawv ntawm cov duab ncaj nraim (xws li carbon steel, alloy steel, thiab lwm yam), nrog rau kev txiav cov kav dej tsis tu ncua (xws li cov kav dej square, cov kav dej, thiab lwm yam), lwm yam); Peb tuaj yeem tsim thiab tsim cov khoom lag luam uas tsis yog tus qauv tshwj xeeb raws li cov neeg siv khoom xav tau. Nws tsis yog tsuas yog tsim nyog rau kev ua thiab vuam ntawm lub nkoj hull cov txheej txheem cov khoom hauv shipyards, tab sis kuj tau siv dav hauv kev tsim khoom loj thiab kev sib dhos kab ua haujlwm ntawm lub thawv qhov chaw hauv kev tsim khoom thiab lwm yam lag luam.