API 5L STEEL YEEB NKAB

API 5L B steel yeeb yog cov hlau ntev hlau nrog cov kab hla kev thiab tsis muaj nqaws ncig nws. Nws yog ua los ntawm cov roj carbon hlau. Carbon Steel yog ib qho hlau-carbon alloy nrog hlau raws li cov matrix thiab carbon ua lub ntsiab ntxiv. Cov yeeb nkab steel muaj lub zog siab thiab tuaj yeem tiv taus qee yam siab thiab nro.

API 5L Galvanized cov yeeb nkab yog cov yeeb nkab nrog ib txheej ntawm zinc rau saum npoo ntawm cov yeeb nkab steel. Lub xub ntiag ntawm zinc txheej muab lub galvanized yeeb nkab zoo corrosion. Cov tshuaj lom neeg ntawm zinc muaj ntau dua hlau. Nyob rau hauv ib puag ncig corrosive, zinc yuav oxidize ua ntej hlau, yog li tiv thaiv cov hlau yeeb matrix ntawm corrosion.