直销DN500DN800螺旋钢管Q235B大口径厚壁焊接管102012无缝钢管
¥16.9
4000
¥28.5
15
¥48.1
200
¥35
100
¥66
31
¥22.8
56
¥21.5
0
¥18
2
¥1.6
65
¥48
52
¥49
20