1.1 Qhov specification2 no tsim cov kev cai rau seamless round, rectangular, thiab square tooj liab raj haum rau kev siv engineering dav dav.
1.1.1 Tubes ua los ntawm ib qho ntawm cov npe Copper UNS No. hauv qab no yuav tsum tau muab tshwj tsis yog tias muaj lwm yam teev tseg hauv daim ntawv cog lus lossis kev yuav khoom:
|
Copper UNS No. |
Hom tooj liab |
|
C10100 |
Cov hluav taws xob tsis muaj oxygen |
|
C10200 |
Oxygen-dawb tsis muaj residual deoxidants |
|
C10300 |
Oxygen-dawb, ntxiv qis phosphorus |
|
C10800 |
Oxygen-dawb, tsis muaj phosphorus |
|
C12000 |
Phosphorus deoxidized, tsis tshua muaj phosphorus |
|
C12200 |
Phosphorus deoxidized, siab residual phosphorus |
1.2 Units-Cov txiaj ntsig tau teev nyob rau hauv ib nti-phaus units lossis SI units yuav tsum raug suav tias yog tus qauv. Nyob rau hauv cov ntawv nyeem, SI units tau qhia nyob rau hauv brackets. Cov txiaj ntsig tau teev tseg hauv txhua qhov system tsis tas yuav muaj qhov sib npaug; Yog li ntawd, txhawm rau kom ua tau raws li tus qauv, txhua qhov system yuav tsum siv nws tus kheej ntawm lwm tus, thiab cov txiaj ntsig los ntawm ob lub tshuab yuav tsum tsis txhob ua ke.
1.3 Cov kev tiv thaiv kev nyab xeeb hauv qab no tsuas yog cuam tshuam rau cov kev sim uas tau piav qhia hauv qhov tshwj xeeb no: Cov qauv no tsis hais txog txhua qhov kev txhawj xeeb txog kev nyab xeeb, yog tias muaj, cuam tshuam nrog nws siv. Nws yog lub luag haujlwm ntawm tus neeg siv ntawm tus qauv no los tsim kom muaj kev nyab xeeb, kev noj qab haus huv, thiab kev coj ua ib puag ncig thiab txiav txim siab txog kev siv cov kev txwv kev txwv ua ntej siv.
1.4 Cov txheej txheem thoob ntiaj teb no tau tsim los ua raws li cov txheej txheem thoob ntiaj teb lees paub txog kev tsim qauv tsim hauv Kev Txiav Txim ntawm Cov Ntsiab Cai rau Kev Txhim Kho Cov Qauv Thoob Ntiaj Teb, Cov Lus Qhia thiab Cov Lus Pom Zoo los ntawm World Trade Organization Technical Barriers to Trade (TBT) Committee.
