1. Q: Dab tsi yog qhov kev qhia tshwj xeeb tshaj plaws rau kev dav dav - lub hom phiaj carbon steel welded yeeb nkab?
A:ASTM A53 Qib B (ERW lossis nruam welded) yog qhov tshwj xeeb tshaj plaws rau kev pabcuam dav dav, xa dej, roj, cua, thiab chav.
2. Q: Qhov txawv ntawm ASTM A53 Qib A thiab Qib B yog dab tsi?
A:Thawj qhov sib txawv yog qhov tsawg kawg nkaus tawm lub zog: Qib A yog 30 ksi (205 MPa), thaum Qib B yog 35 ksi (240 MPa). Qib B kuj muaj cov pa roj carbon ntau dua me ntsis.
3. Q: Qib twg ntawm ASTM A106 haum rau siab -kev pabcuam kub?
A:Tag nrho cov qib (A, B, C) ntawm ASTM A106 seamless yeeb nkab yog rau siab -kev pab kub, tab sis Qib C muaj lub zog tensile siab tshaj (70 ksi min) thiab cov ntsiab lus carbon (0.35% max).
4. Q: ASTM A500 cov yeeb nkab puas tuaj yeem welded?
A:Yog lawm, ASTM A500 (Qib A, B, C) structural tubing tuaj yeem welded, tab sis cov txheej txheem vuam yuav tsum suav rau nws qhov txias- tsim cov khoom thiab muaj peev xwm ua rau lub zog poob hauv tshav kub- cuam tshuam cheeb tsam (HAZ).
5. Q: Dab tsi yog qhov tseem ceeb ntawm API 5L Line Pipe?
A:API 5L yeeb nkab yog siv rau kev thauj cov roj, roj, thiab slurry hauv cov kav dej. Cov qib uas muaj xws li PSL1 (piv txwv li, Gr. B, X42) thiab siab dua -lub zog PSL2 (piv txwv li, X52, X60, X70).
