what is jis sma570w atmospheric corrosion resistant plate

what is jis sma570w atmospheric corrosion resistant plate

SMA570W steel plate The company brand is trustworthy good corrosion resistance st37-2 bridge gradeSpecialized in good corrosion resistance a572 grade 50 building supplier. ASTM A572 Grade50,55,60 HSLA Structural Steel PlateAGICOASTM A572 Gr 50 steel material can be bended or shaped by cold work, also has increased resistance to atmospher