API SPEC 5CT-2018 Casing thiab Tubing
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API SPECIFICATION 5CT CINTH EDITION-2012 Cov Lus Qhia rau Casing thiab Tubing
Api5ct roj casing feem ntau yog siv los thauj roj, roj av, roj, dej thiab lwm yam kua thiab roj av, Nws tuaj yeem muab faib ua cov yeeb nkab hlau tsis sib xws thiab cov yeeb nkab hlau welded. Cov yeeb nkab hlau welded feem ntau yog hais txog cov yeeb nkab hlau welded ntev.
