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русский Hauv tebchaws United Kingdom, galvanized hlau (GI) conduits feem ntau yog tsim thiab tswj raws li British Standards (BS). Cov txheej txheem BS tshwj xeeb uas siv rau GI conduits yog BS 4568: Ntu 1. Cov qauv no yog hu ua "Specification rau steel conduit thiab fittings nrog metric threads ntawm ISO daim ntawv rau hluav taws xob installation."
BS 4568: Ntu 1 qhia txog cov kev cai rau cov kav hlau, uas tuaj yeem ua los ntawm cov hlau lossis hlau galvanized. Cov conduits no yog siv rau kev teeb tsa hluav taws xob los tiv thaiv thiab xa hluav taws xob thaiv thiab cables. Tus qauv qhia qhov ntev, cov khoom siv, thiab lwm yam kev xav tau rau cov kav dej thiab lawv cov fittings.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias thaum BS 4568: Ntu 1 yog ib qho kev lees paub dav dav rau GI conduits hauv UK, lwm cov qauv thiab cov lej yuav siv tau hauv ntau cheeb tsam lossis lub tebchaws. Yog li ntawd, yog tias koj tab tom qhia lossis ua haujlwm nrog GI conduits nyob rau hauv ib qho chaw tshwj xeeb, nws yog ib qho tseem ceeb uas yuav tau sab laj nrog cov qauv hauv zos thiab cov cai kom ua raws li cov cai hauv zos thiab cov cai.
