无缝同心焊接大小头变径异径管加厚碳钢钢制对焊管接头DN150*100
¥13.8
0
¥0.3
¥29.4
¥77
¥21.2
¥27.8
¥11
16
¥1.6
1000
¥2.5
67
¥5.8
46
¥12.5
15
¥12.8