Longitudinally Submerged Arc Welded (LSAW) steel kav yog dav siv nyob rau hauv ntau yam lag luam, xws li roj thiab roj, dej, kev tsim kho, thiab kev thauj mus los. Cov kav dej no muaj cov kav ntev, lub zog, thiab kev tiv thaiv corrosion, ua rau lawv zoo tagnrho rau qhov hnyav thiab xav tau ib puag ncig.Kev siv cov qib steel zoo ua kom lub zog, ua haujlwm ntev, thiab lub neej ntev ntawm LSAW steel kav, ua rau lawv txhim khu kev qha thiab raug nqi. kev daws teeb meem rau ntau yam kev siv.
Muaj ntau qib ntawm cov hlau siv hauv kev tsim cov LSAW steel kav. Cov no suav nrog:
1. API 5L: Qhov no yog tus qauv specification rau seamless thiab welded steel kav rau siv nyob rau hauv tsheb thauj mus los systems nyob rau hauv cov roj av thiab natural gas industries.
2. ASTM A252, ASTM A252: Qhov kev qhia tshwj xeeb no suav nrog cov kav hlau siv rau hauv kev ua haujlwm piling, kev siv cov qauv, thiab lwm yam.
3. ASTM A53: Qhov kev qhia tshwj xeeb no suav nrog seamless thiab welded dub thiab kub-dipped galvanized steel kav siv rau kev siv tshuab thiab siab, nrog rau hauv chav dej, dej, roj, thiab cua.
4.TS EN 10217: Qhov no yog European txheem specification rau welded steel kav rau lub hom phiaj siab.
5.TIAB SA 2458: Qhov no yog German tus qauv specification rau welded steel kav rau lub hom phiaj.
6. GB/T 9711: Qhov no yog Suav teb tus qauv specification rau kab yeeb nkab siv nyob rau hauv roj av thiab natural gas industries.
Ntxiv rau cov qib no, LSAW steel kav kuj tseem tuaj yeem tsim los ntawm lwm hom hlau, xws li cov hlau tsis tshua muaj hlau, cov hlau muaj zog, thiab cov hlau tsis muaj zog.
