Raws li tau hais los ntawm API5L tus qauv, PSL2 yog qib tshwj xeeb rau kev tsim cov kav hlau siv los thauj cov roj, roj thiab lwm yam dej. Qhov kev qhia tshwj xeeb no yog tsim los xyuas kom meej tias cov kav dej ua tau raws li cov qauv kev ua tau zoo thiab kev ua tau zoo dua li PSL1 theem pib. Kev nkag siab txog cov kev xav tau thiab cov yam ntxwv ntawm PSL2 yog qhov tseem ceeb rau kev xaiv cov kav dej kom raug rau cov kev siv sib txawv thiab ua kom muaj kev nyab xeeb thiab txhim khu kev thauj mus los ntawm hydrocarbons thiab lwm yam kua dej.
Cov Lus Qhia Tseem Ceeb thiab Nta
API 5L PSL2 imposes ntau qhov tseem ceeb thiab nta ntawm kev tsim thiab kev sim cov kav hlau. Cov no suav nrog:
1. Tshuaj muaj pes tsawg leeg: PSL2 qhia nruj tswj cov tshuaj muaj pes tsawg leeg ntawm steel siv nyob rau hauv pipeline ntau lawm kom ntseeg tau zoo ib yam khoom thiab weldability,
2. Cov khoom siv tshuab: Piv nrog PSL1, PSL2 cov kav dej yuav tsum ua kom tau raws li qhov tsawg kawg nkaus lub zog, lub zog tensile thiab toughness yuav tsum tau txhim kho lawv lub peev xwm los tiv thaiv kev khiav hauj lwm kev ntxhov siab thiab ib puag ncig.
3. Cov txheej txheem kuaj: PSL2 yuav tsum muaj cov txheej txheem kev xeem nruj dua, suav nrog kev kuaj tsis muaj kev puas tsuaj (NDI) xws li kuaj ultrasonic thiab radiographic, txhawm rau txheeb xyuas qhov tsis xws luag thiab xyuas kom muaj kev ncaj ncees ntawm cov kav dej.
4. Cov qauv ntsuas tsis muaj kev puas tsuaj: PSL2 teeb tsa kev lees paub nruj dua rau NDI, txo qhov tso cai loj thiab muaj pes tsawg tus tsis xws luag, yog li txhim kho tag nrho cov khoom zoo thiab kev ntseeg siab ntawm cov kav dej.
5. Lwm yam kev xav tau ntxiv: PSL2 yuav suav nrog cov kev xav tau ntxiv rau qee yam kev siv lossis kev ua haujlwm, xws li kev pabcuam qaub, kev pabcuam kub lossis ib puag ncig sab nraud,
API 5L Seamless Kab Yeeb
