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Plat baja Q420D
Plat baja Q420D
Plat baja Q420D
Plat baja Q420D

Plat baja Q420D

GB / T1591 Q420 ngemot limang gelar baja sing beda-beda minangka Q420A, Q420B, Q420C, Q420D lan Q420E. Baja struktural Q420D bakal ditindakake tes impacting ing suhu kurang minus 20 derajat celcius. Q420D ing kekandelan abot.
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