大直径焊管
large diameter welded pipe
Large sized weld tube
大直径焊管生产线
large diameter welded pipe production line
大直径螺旋钻孔桩
large diameter bored pile
大口径螺旋焊接钢管
Large -sized spiral welded pipe
大直径管板
Large diameter tube plate
大直径管桩
large diameter spun piles
large-diameter pipe pile
大直径径向渗透率仪
full diameter radial permeameter
大直径直缝焊管
Large－ sized straight weld pips
large-diameter butt welded pipe
large diameter longitudinal welded pipe
Large-sized straight welded tube
低转速大直径螺桨
large slow-turning propeller
混凝土大直径管桩
large－ diameter concrete cylinder pile
预应力混凝土大直径管桩
Large-diameter Prestressed Concrete Pipe Pile
中小直径焊管
middle and smalldiameter welded pipe