Q: Dab tsi yog qhov siab tshaj plaws ua haujlwm kub rau ASTM A106 Gr. B seamless steel raj?
A: ASTM A106 Gr. B yog qhov tsim nyog rau kev pabcuam txog 750℃F (399 degree) nyob rau hauv ib txwm muaj, tab sis nws nyob ntawm lub siab thiab ib puag ncig.
Q: Dab tsi yog cov tshuaj muaj pes tsawg leeg rau API 5L X70 seamless yeeb nkab?
A: API 5L X70 feem ntau muaj carbon max 0.12%, manganese mus txog 1.70%, sulfur max 0.015%, phosphorus max 0.025%, thiab microalloying ntsiab xws li niobium los yog vanadium.
Q: ASTM A335 P11 ua haujlwm li cas hauv siab -kev pabcuam hydrogen?
A: ASTM A335 P11 (1.25% chromium, 0.5% molybdenum) muaj kev tiv thaiv zoo rau hydrogen nres ntawm qhov kub txog li 800℃F (427 degree), tab sis nws yuav xav tau tom qab -weld heat treatment.
Q: Dab tsi yog cov ntawv thov ntawm ASTM A312 TP304 seamless raj?
A: ASTM A312 TP304 feem ntau yog siv rau hauv kev ua tshuaj lom neeg, khoom noj khoom haus thiab dej haus, tshuaj, thiab kev siv vaj tse vim nws cov corrosion kuj.
Q: Lub zog ntawm ASTM A106 Gr yog dab tsi? C?
A: Yam tsawg kawg nkaus lub zog rau ASTM A106 Gr. C yog 40,000 psi (276 MPa).
