Dab tsi yog Cov Khoom Siv Suav Rau ASTM A335 P22?

Dab tsi yog cov khoom siv suav nrog rau ASTM A335 P22?

ASTM A335 P22 yog ib hom high-temperature alloy steel yeeb nkab khoom, thiab nws cov khoom siv suav nrog yog 10CrMo9-10