Rau cov roj thiab cov khoom siv roj, peb feem ntau siv API 5L PSL1 yeeb nkab lossis PSL2 yeeb nkab. Qhov sib txawv ntawm PSL1 thiab PSL2 feem ntau yog nyob rau hauv cov kev cai rau cov tshuaj muaj pes tsawg leeg, txhua yam khoom, tsis muaj kev puas tsuaj, kev ua haujlwm vuam, thiab kev ntseeg siab ntawm cov kav hlau.
PSL1 muaj qee qhov yuav tsum tau ua rau cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab tsis muaj kev puas tsuaj, tab sis lawv kuj tsawg. PSL2 muaj cov kev cai nruj dua rau cov ntsuas no, suav nrog lub zog siab dua, qis dua cov sulfur thiab phosphorous cov ntsiab lus, thiab lwm yam.
PSL2 yuav tsum muaj kev sib txuas zoo ntawm cov kav hlau thiab cov kev xav tau siab dua rau kev tshuaj xyuas cov pob qij txha, suav nrog kev kuaj X-ray, kuaj ultrasonic, kuaj cov khoom sib nqus, thiab lwm yam.
PSL2 kuj tseem yuav tsum muaj kev ntsuas nruj dua, suav nrog kev sim cuam tshuam, ntsuas tensile, kuaj hardness, thiab lwm yam.
Hauv cov ntsiab lus, piv rau PSL1, PSL2 muaj cov kev xav tau siab dua rau cov kav hlau steel, them nyiaj ntau dua rau kev tswj xyuas kom zoo thiab kev ntseeg siab. Yog li ntawd, nyob rau hauv qee qhov haujlwm tshwj xeeb, qhov kev nyiam rau cov kav dej yeeb nkab zoo li PSL2 cov khoom lag luam. "
TIANJIN Tongda steel txwv yog lub tuam txhab tseem ceeb uas muab API PSL1 thiab PSL2 kav thoob plaws ntiaj teb.
