ASTM A653/A653M SS 480 G90镀锌板卷SS 480 G90 ¥3900.00 ASTM A653/A653M SS 550 CLASS 1 G90镀锌板卷 ¥3900.00 astm a653/a653m ss 550 class 2 G90镀锌板卷 ¥3900.00 ASTM A653/A653M SS 550 CLASS 3 G90镀锌板卷 ¥3900.00 ASTM A653/A653M HSLAS 275 G90镀锌板卷 ¥3900.00 ASTM A653/A653M HSLAS 340 G90镀锌板卷 ¥3900.00