Tawm tsam qhov keeb kwm yav dhau los ntawm kev tsim kho thoob ntiaj teb kev tsim kho tshiab thiab kev nqis peev ruaj khov, qhov kev thov rau siab - zoo seamless steel kav ua raws li Japanese Industrial Standards (JIS) tseem nyob ruaj khov. Tshwj xeeb, seamless steel kav ua los ntawm cov pa roj carbon thiab alloy steels raws li JIS G3454, G3455, thiab G3456 tau nce ntxiv rau cov haujlwm engineering thoob ntiaj teb thiab kev tsim cov ntawv thov vim lawv muaj pov thawj kev ntseeg siab hauv cov kav dej, cov khoom siv kho tshuab, thiab siab - kub / siab - kev pabcuam siab.
Cov txheej txheem no qhia txog qhov yuav tsum tau ua rau cov kev thov sib txawv:
•JIS G3454:Muaj feem xyuam rau carbon steel seamless kav rau siab piping (piv txwv li, STPG370), dav siv nyob rau hauv cov dej thauj systems nyob rau hauv roj av, tshuaj, thiab lwm yam lag luam.
•JIS G3455:Npog carbon steel thiab Mo steel seamless kav rau siab -kub siab piping (xws li, STPT410), ua cov ntaub ntawv tseem ceeb rau siab -kub pipelines hauv fais fab nroj tsuag thiab refineries.
•JIS G3456:Qhia meej cov hlau tsis muaj seamless kav rau siab - kev pabcuam siab (xws li STPA22), feem ntau siv hauv boilers thiab tshuaj nroj tsuag nyob rau hauv cov mob hnyav.
Kev thov kev lag luam feem ntau yog tsav los ntawm kev txhim kho cov khoom siv hluav taws xob, kev loj hlob ntawm cov phiaj xwm kev tsim kho vaj tse hauv Asia-Pacific cheeb tsam, thiab cov kev xav tau nce ntxiv rau cov khoom siv hauv high-kev tsim khoom. Saib tom ntej, cov neeg tsim khoom tsim nyog muaj peev xwm ua tau raws li JIS- cov khoom ua raws nrog kev cog lus rau kev tsim ntsuab yuav tsum muaj kev sib tw kom zoo dua.
Renowned rau lawv cov nruj thiab ceev faj, JIS cov qauv thiab cov kav dej seamless uas tsim nyob rau hauv lawv txuas ntxiv ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb thiab kev ua haujlwm ntawm kev lag luam thoob ntiaj teb.
