1. Q: Thaum twg seamless yeeb nkab yuav tsum tau tshaj welded yeeb nkab?
A:Rau cov kev pabcuam tseem ceeb nrog kev kub siab, kub siab, kev thauj khoom hnyav hnyav, lossis qhov chaw muaj kev pheej hmoo ntawm kev sib txuas tsis tuaj yeem lees txais. Feem ntau teev los ntawm cov cai (xws li, ASME B31.3 rau qee yam mob).
2. Q: Dab tsi yog qhov zoo ntawm kev siv Quenched & Tempered (Q&T) qib zoo li API 5L X80?
A:Lub zog siab heev-rau- qhov hnyav piv, tso cai rau kev sib kis ntau dua lossis cov phab ntsa nyias nyias (nqi txuag ntawm cov khoom siv thiab vuam), tshwj xeeb tshaj yog nyob rau hauv ntev - cov kav dej.
3. Q: Lub hom phiaj ntawm bevelled xaus ntawm cov yeeb nkab yog dab tsi?
A:Txhawm rau npaj cov yeeb nkab rau pob tw - vuam. Lub kaum sab xis (feem ntau yog 37.5 degree) tso cai rau kev nkag mus thiab fusion ntawm weld cag.
4. Q: Dab tsi yog "kev kos duab txias" hauv kev tsim cov yeeb nkab thiab nws cov txiaj ntsig zoo rau qib zoo li ASTM A179?
A:Rub lub raj seamless los ntawm kev tuag ntawm chav tsev kub. Nws txhim kho nto tiav, qhov tseeb qhov tseeb, thiab lub zog txhua yam.
5. Q: "Schedule" yog dab tsi (piv txwv li, Teem caij 40, 80)?
A:Nws txhais cov phab ntsa thickness rau ib tug muab NPS. Lub sijhawm teem sijhawm siab dua=phab ntsa tuab dua. Teem sijhawm 40 thiab 80 feem ntau yog cov pa roj carbon steel.
