Kev xaiv ntawm Kauv Welded Pipes hauv Kev Tsim Kho Hauv Nroog
Feb 20, 2024
In urban gas pipeline networks, steel pipes are generally used in high-pressure, sub-high-pressure pipelines and gas main pipes, but there are also problems in the selection of steel pipe types. In recent years, straight seam welded steel pipes have gradually replaced spiral pipes in pipelines with higher pressures. At present, the price of high-frequency resistance welded steel pipe (ERW) is lower than that of spiral pipe (SSAW), and its quality and reliability are higher than that of spiral pipe. It has good cost performance and is used more and more widely. Pipe outer diameter ￠≤406mm adopts straight seam electric resistance welded ERW steel pipe, and ￠>406mm adopts ncaj seam ob-sided submerged arc welded steel yeeb nkab (UOE txheej txheem).
Hais txog cov kav dej nruab nrab thiab tsis tshua muaj siab, PE cov kav dej muaj qhov zoo ntawm qhov zoo ntawm kev ua haujlwm zoo, kev tiv thaiv corrosion, thiab cov phab ntsa du, ua rau PE80 cov khoom siv PE cov kav dej yog cov khoom siv yeeb nkab loj rau cov kav dej me me nruab nrab thiab cov kav dej tsis tshua muaj siab. Nyob rau hauv txawv teb chaws, high-density PE100 khoom PE kav yog siv vim lawv Nrog unparalleled zoo nyob rau hauv tus nqi thiab txij nkawm tus nqi, nws tau dhau los ua thawj xaiv rau faus nruab nrab thiab tsawg-siab gas pipelines. Txawm li cas los xij, thaum txoj kab uas hla ntawm cov yeeb nkab loj dua qhov kev txwv kev lag luam ntawm PE yeeb nkab, cov yeeb nkab steel yuav tsum tau siv. Piv txwv li, nruab nrab-siab cov kav dej saum toj no DN200 feem ntau siv ncaj seam tsis kam welded ERW steel kav.
Hauv cov nroog, qhov concentration ntawm tib neeg, tsheb, thaj chaw loj hauv tsev, cov chaw hauv av complex, thiab cov chaw tshwj xeeb rau cov kav xa hluav taws xob tso siab dua rau kev xaiv cov kav dej. Ncaj seam steel kav yuav tsum tau siv nyob rau hauv cov cheeb tsam tseem ceeb los txo qhov ntev ntawm cov yeeb nkab welds, txhim kho weld zoo, thiab txo qhov muaj feem yuav raug xwm txheej. Tsis tas li ntawd, thaum txiav txim siab qib steel ntawm cov kav dej, cov qib steel xaiv raws li kev lag luam kev lag luam yuav tsum tau qis dua los ntawm ib theem kom nce phab ntsa thickness ntawm cov kav dej thiab txhim kho cov kab nrib pleb ntawm cov kav dej.
