Ib txoj hlua khi seam yog cov hlau ntev nrog lub hollow hla ntu thiab tsis muaj nqaws nyob ib puag ncig nws.
Seamless steel yeeb nkab muaj ntu hollow thiab dav siv los ua lub raj xa dej rau cov khoom nqa dej. Piv nrog rau cov khoom tawv xws li cov hlau puag ncig, cov yeeb nkab steel muaj qhov khoov tsawg thiab torsional lub zog thiab yog qhov sib dua ntawm qhov hnyav. Thiab cov khoom siv tshuab, xws li cov roj tho kev siv roj tsheb, lub tshuab tsav lub tsheb, lub tsheb kauj vab, thiab lub pob hlau siv rau hauv kev tsim kho vaj tsev.
Seamless steel hlab muaj ntau yam siv. Lub hom phiaj dav dav hlau tsis xeb hlau tau dov los ntawm cov pa roj carbon zoo tib yam hlau, tsis tshua muaj hlau tsis tshua muaj hlau lossis cov qauv hlau loj, nrog cov khoom loj tshaj plaws, thiab feem ntau yog siv los ua cov kav dej lossis cov txheej txheem sib tw rau cov dej.
2. Nws tau muab faib ua peb pawg raws li kev siv sib txawv:
a. Muab khoom raws li cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv tshuab;
b. Muab khoom raws li cov khoom kho tshuab;
c. Muab khoom raws li hydraulic kuaj. Rau cov kav xa dej steel xa mus raws li qeb a thiab b, yog tias lawv siv los tiv cov kua nruab siab, kuj yuav tsum tau kuaj hydraulic.
