Q: Dab tsi yog lub hauv paus tseem ceeb ntawm kev ua tsis tiav rau A53 carbon steel yeeb nkab txuas nrog PSV?
A:Kev ua tsis tiav tuaj yeem tshwm sim vimntau phab ntsa thinning los ntawm abrasive sib tsoothaum lub sij hawm kev teeb tsa kom haum rau ua ntej -fabricated spools, tsim ib tug los ntawm - thickness flaw. Qhov no thinning cheeb tsam tom qab ntawd ua rau tsis ua hauj lwm los ntawm kev co thiab atmospheric teebmeem -1.
Q: Puas yog A53 Qib B cov yeeb nkab uas tsim los rau cov qauv ASTM tshiab yuav tsum tau rov- kev pom zoo siv rau hauv cov kav dej tswj kav?
A:Cov thawj coj zoo li Pipeline thiab Cov Khoom Siv Hluav Taws Xob Kev Nyab Xeeb Kev Nyab Xeeb (PHMSA) hloov kho cov npe ntawm cov qauv pom zoo ib ntus. Cov ntaub ntawv tsim los rau cov ntawv tshiab dua li cov npe tam sim no tuaj yeem ua tau yog tias cov chaw tsim khoom lees paub tias lawv ua tau raws li qhov yuav tsum tau muaj ntawm tsab ntawv teev npe tshiab -7.
Q: Dab tsi tsis yog -kev kuaj xyuas kev puas tsuaj (NDE) yuav tsum muaj rau A53 Hom E thiab F Qib B kav?
A:Tus txheej txheem mandates100% tsis yog -kev kuaj xyuas ntawm qhov vuam seamrau Qib B welded kav (Hom E thiab F), siv txoj kev xws li ultrasonic, eddy tam sim no, los yog sib nqus to flux -5.
Q: Rau A53 yeeb nkab, qhov sib txawv tseem ceeb hauv NDE cim ntawm seamless thiab welded kav yog dab tsi?
A:Seamless kav (Hom S) uas dhau NDE rau tag nrho cov yeeb nkab lub cev yuav raug cim "NDE". Cov kev xav tau rau cov kav dej welded tshwj xeeb yog tsom rau ntawm qhov vuam seam -5.
Q: Dab tsi yog qhov hloov tshiab tseem ceeb hauv 2024 version ntawm ASTM A53 tus qauv?
A:Qhov hloov tshiab tseem ceeb yog qhovtxuas ntxiv ntawm Qib B steel kom suav nrog Hom F (lub qhov cub- pob tw welded) yeeb nkab, nthuav dav daim ntawv thov ntau rau tus nqi no - kev xaiv zoo rau siab dua - lub tshuab siab -5..
