1. Q: Rau daim ntawv thov kev pabcuam qaub uas xav tau cov yeeb nkab seamless, qib twg yuav raug teev tseg raws li API 5L?
A: API 5L X52 S los yog zoo sib xws, qhov "S" qhia txog qhov tsim nyog rau kev pabcuam qaub, nrog rau kev txwv tsis pub siv tshuaj (xws li, max hardness 22 HRC, CE txwv) thiab feem ntau HIC kuaj.
2. Q: Lub hom phiaj ntawm "Galvanizing" ntawm cov pa roj carbon steel yeeb nkab yog dab tsi, thiab nws puas ua rau seamless?
A: Siv cov zinc txheej rau kev tiv thaiv corrosion hauv atmospheric lossis kev pabcuam me me. Seamless yeeb nkab (A53) tuaj yeem galvanized, tab sis qhov siab - txheej txheem kub tuaj yeem cuam tshuam rau cov khoom siv tshuab; A106 feem ntau tsis galvanized.
3. Q: Dab tsi yog "Lum Pipe" hauv kev lag luam roj, thiab nws puas seamless?
A: Yog, nws yog siab - lub zog, seamless, alloy steel yeeb nkab (feem ntau yog API 5D) siv los tig lub laum me ntsis thiab ncig cov dej drilling hauv cov roj / roj qhov dej.
4. Q: Qhov cim "ASTM A106 Gr. B + N" qhia li cas?
A: Qhov "+N" qhia tias cov yeeb nkab tau muab rau hauv cov cua sov li qub - kho mob, muab cov khoom zoo dua qub.
5. Q: Dab tsi yog qhov ua rau tsis ua haujlwm ntawm cov pa roj carbon steel chav kav?
A: Flow-Accelerated Corrosion (FAC) lossis yaig-corrosion, qhov chaw tiv thaiv magnetite yog yaj los ntawm cov dej ntws / chav dej, ua rau phab ntsa nyias nyias. Chemistry (tsawg Cr) thiab ntws nrawm yog qhov tseem ceeb.
