astm a653/a653m ss 275 镀锌板卷宝钢首钢武钢SS 275 ¥3900.00 ASTM A653/A653M SS 340 CLASS 1 镀锌板卷 ¥3900.00 ASTM A653/A653M SS 340 CLASS 2 镀锌板卷 ¥3900.00 ASTM A653/A653M SS 340 CLASS 3 镀锌板卷 ¥3900.00 ASTM A653/A653M SS 340 CLASS 4 镀锌板卷 ¥3900.00 ASTM A653/A653M SS 380 镀锌板卷宝钢鞍钢 ¥3900.00