1. ASTM A120 yog dab tsi?
Teb:ASTM A120 yog ib qho kev qhia tshwj xeeb rau dub thiab kub -dipped galvanized steel yeeb nkab rau kev siv zoo tib yam. Nws feem ntau tau hloov los ntawm ASTM A53.
2. Dab tsi yog qhov tseem ceeb ntawm tus lej "Schedule" (xws li Sch 40, Sch 80)?
Teb:Daim Ntawv Teev Npe (Sch) qhia txog phab ntsa tuab ntawm cov yeeb nkab rau qhov loj me me. Cov lej siab dua txhais tau tias cov phab ntsa tuab dua thiab cov kev ntsuas siab dua.
3. Puas yog Schedule 40 yeeb nkab ib txwm tuab?
Teb:Tsis yog. Qhov tseeb phab ntsa thickness rau ib lub sij hawm muab (xws li 40) txawv nrog cov nominal yeeb nkab loj (NPS). 2-nti Sch 40 yeeb nkab yog tuab dua li 1-nti Sch 40 yeeb nkab.
4. Dab tsi yog qib qis rau -kub carbon steel yeeb nkab?
Teb:ASTM A333 Qib 6 yog ib qho kev qhia tshwj xeeb rau seamless thiab welded steel yeeb nkab rau qis -kev pabcuam kub.
5. "Tua Hlau" txhais li cas?
Teb:Cov hlau tua tau tag nrho deoxidized thaum lub sij hawm steelmaking, uas ua rau muaj cov qauv zoo dua qub thiab cov hnab ntim roj tsawg dua. Qib zoo li ASTM A106 feem ntau xav tau cov hlau tua.
