Dab tsi yog cov qib steel feem ntau siv rau ASTM A53 yeeb nkab?
Feem ntau siv cov qib steel rauASTM A53 Tubeyog Qib A thiab Qib B. Qib B steel yog feem ntau siv vim nws lub zog ntau dua. Qib A steel yeeb nkab feem ntau yog siv rau cov ntawv thov nrog lub siab qis thiab tsis tshua muaj kev txwv nruj, vim nws cov ductility siab dua yog qhov zoo rau cov ntawv thov.
Cov txheej txheem vuam dab tsi yog "ncaj seam welded yeeb nkab" feem ntau xa mus rau?
"Ncaj seam welded yeeb nkab" tuaj yeem xa mus rau ntau qhov txheej txheem vuam, feem ntau yog qhov tsis kam vuam (ERW) thiab submerged arc vuam (SAW). ERW yog dav siv rau cov kav dej nyias vim nws qhov ua tau zoo thiab tus nqi qis, thaum SAW feem ntau siv rau loj - txoj kab uas hla ntawm cov kav hlau.
Dab tsi yog kev sib raug zoo ntawm ASTM A53 ncaj seam welded yeeb nkab thiab galvanized yeeb nkab?
ASTM A53yog ib qho kev qhia tshwj xeeb uas npog cov kev xav tau rau cov kav dej welded thiab seamless steel kav, thaum "galvanized" yog hais txog kev tiv thaiv -corrosion txheej siv rau cov yeeb nkab. Yog li ntawd,ASTM A53 ncaj seam welded yeeb nkabtuaj yeem yog "dub" (uncoated) lossis "kub-dip galvanized" (coated nrog ib txheej ntawm zinc).
Yuav ua li cas tiv thaiv xeb ntawm ungalvanized ASTM A53 ncaj seam welded yeeb nkab?
Txhawm rau tiv thaiv ungalvanizedASTM A53 ncaj seam yeeb nkabfrom rusting, first thoroughly clean the surface, including sanding and degreasing, then apply a multi-layer protective coating system consisting of a zinc-rich epoxy primer and a durable topcoat (such as polyurethane).
Dab tsi yog daim ntawv thov ntawm ASTM A53 welded ncaj seam yeeb nkab?
ASTM A53 welded ncaj seam yeeb nkabmuaj ntau yam kev siv, haum rau kev siv qis - siab thiab cov qauv siv, xws li cov kav dej xa dej, roj, thiab cua, nrog rau cov khoom siv xws li scaffolding, tsev thav duab, thiab txuas hniav.
