Ntxov Cov Qauv (Thaum Ntxov 20th Xyoo pua)
Feem ntau cia siab nyob rau hauv phau ntawv vuam thiab cov txheej txheem dov yooj yim
Txwv kom yooj yim yeeb nkab diamers thiab phab ntsa thicknesses
Seamless yeeb nkab breakrough (1930 {1}} s)
Taw qhia ntawm Mannesmann Plug Mill cov txheej txheem
Kev loj hlob ntawm tho thiab Elongation cov tswv yim
Kev qhib kev tsim khoom ntawm cov kav dej seamless nrog zoo siab tiv
Welded Yeeb Nkab Ceev (1960 {1}} s)
Hig-zaus siv hluav taws xob tiv thaiv hluav taws xob (ERW) hloov vuam
Nce qib hauv kev kauv submerged arc vuam (ssaw) thev naus laus zis
Txhim kho ntev ntev submerged arc vuam (lsaw) cov tswv yim
Niaj hnub nimno precision sib sau (1990s-tam sim no)
Kev saws me ntsis ntawm nruam yob txoj kev thev naus laus zis
Kev siv ntawm lub computer tswj sizing mills
Kev tsim kho cov txheej txheem tsim nyog rau cov kav dej tshwj xeeb
Txiav-ntug kev nrhav (21st caug xyoo)
Daim ntawv thov ntawm cov zauv sim ua haujlwm hauv kev sib sau ua kom zoo
Kev sib xyaw ua ke ntawm Automation thiab cov ntse tswj cov tshuab
Kev tawm tswv yim zoo li 3D dov txoj kev thiab laser sib sau
Evolution Cov yam ntxwv:
Los ntawm phau ntawv ua haujlwm rau kev siv tshuab
Los ntawm cov kav dej txheem rau customized precision sib sau
Los ntawm ib-leeg txheej txheem los sib xyaw tsim khoom ntse
Kev txhim kho txuas ntxiv hauv cov khoom siv hluav taws xob raug thiab cov khoom siv neeg kho mob
