Dab tsi yog API 5L Qib X52 Yeeb Nkab
API 5L X52 yog hais txog qib ntawm pipeline steel yeeb nkab siv nyob rau hauv cov roj thiab roj kev lag luam. Cov yeeb nkab steel no raws cov qauv API, uas npog cov chaw tsim khoom thiab kuaj cov kav hlau siv rau cov roj thiab roj kev lag luam. Qib X52 qhia tau tias tsawg kawg yog lub zog ntawm cov yeeb nkab steel yog 52,} patt (txog 360Mpa phaw tshuab.
Cov Api 5L tus qauv tseem muab faib ua ob theem cov khoom lag luam tshwj xeeb, PSL1 thiab PSL2. PSL1 feem ntau muab cov xa hluav taws xob kom dav dav hlau zoo yuav tsum tau, thaum PSL2 ntxiv kev siv tshuaj muaj kuab lom, muaj zog thiab cov khoom siv nde. X52 yeeb nkab hlau yuav ntsib PSL1 lossis PSL2 yuav tsum tau, nyob ntawm kev tsim cov ntsiab lus thiab cov khoom xa tuaj ntawm cov yeeb nkab steel.
