Lub raj yuav tsum tau tsim los ntawm cov txheej txheem kub-los yog txias-ua hauj lwm raws li tsim ib homogeneous uniform wrought qauv hauv cov khoom tiav. Cov khoom siv yuav tsum ua raws li cov tshuaj muaj pes tsawg leeg uas tau teev tseg. Lub raj yuav tsum tau muab tso rau hauv O50 lossis O60 annealed tempers. Lub raj yuav tsum muaj qhov tsawg kawg nkaus tensile lub zog thiab elongation tus nqi raws li tau teev tseg thaum kuaj. Sab nraud txoj kab uas hla ntawm lub raj tau muab tso rau yuav tsum muaj peev xwm nthuav mus rau tus nqi teev thaum kuaj.
1.1 Qhov kev qhia tshwj xeeb no tsim cov kev cai rau ci ntsa iab annealed seamless tooj liab raj tsim nyog siv rau hauv tub yees, roj kab, roj av, thiab lwm yam, qhov twg lub raj nrog ib qho chaw sab hauv qhov tseem ceeb tsis muaj nplai thiab av yuav tsum tau ua.
1.1.1 Cov Tubes ua los ntawm ib qho ntawm cov npe Copper UNS No. hauv qab no yuav tsum tau muab, tshwj tsis yog hais tias muaj lwm yam hauv daim ntawv cog lus lossis kev yuav khoom:
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Copper UNS No.2 |
Hom tooj liab |
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C10200 |
Oxygen-dawb |
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C10300 |
Oxygen-dawb, (OFXLP) |
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C10800 |
Oxygen-dawb, (OFLP) |
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C12000 |
Phosphorus deoxidized, tsis tshua muaj phosphorus |
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C12200 |
Phosphorus deoxidized, siab residual phosphorus |
1.2 Units-Cov txiaj ntsig tau teev tseg hauv SI units lossis nti-phaus units yuav tsum raug suav tias yog tus qauv. 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 qauv no tsis qhia meej 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 txhawm rau 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.
