Under steel standard ASTM A653/A653M,galvanized steel plate A653 DDS Type A is owned the yield strength within 140-240 Mpa,and comparing with A653 DDS Type C which is owned yield strength within 170-280 Mpa,else,galvanized steel sheet and coil A653 DDS Type C has limited on elements Phosphorus when rolling within 0020-0.100 %.Generally the galvanized steel sheet and coil A653 DDS Type A shall be done surface treatment after rolling,if when customers indicate in their purchase order without surface treatment terms,we can delivery these galvanized steel materials under untreated condition.In this case,there is increased risk of atmospheric corrision.

Under ASTM A653/A653M galvanized steel standard,there are other galvanized steel grades such as A653 CS Type A,A653 CS Type B,A653 CS Type C,A653 FS Type A,A653 FS Type B,,A653 DDS Type A,A653 DDS Type C,A653 EDDS,A653 SS230,A653 SS255,A653 SS275,A653 SS340 Class 1,A653 SS340 Class 2,A653 SS340 Class 3,A653 SS340 Class 4,galvanized steel plate A653 SS550 Class 1,A653 SS550 Class 2,A653 HSLAS 275,A653 HSLAS 340,A653 HSLAS 410,A653 HSLAS 480,A653 HSLAS 550,galvanized steel coil A653 SHS 180,A653 SHS 210,A653 SHS 240,A653 SHS 280,A653 SHS 300,A653 BHS 180,A653 BHS 210,A653 BHS 240,A653 BHS 280,A653 BHS 300 galvanized steel plate and coil.Welcome our vast customers inquiry us for galvanized steel sheets.

Chemical composition for hot dip galvanized steel plate and coil A653 DDS Type A (Max):