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  large diameter pipe; big inch pipe

大直径管板  Large diameter tube plate

大直径管道  large diameter pipeline

大直径管线  big inch line

大直径管桩  large diameter spun piles; large-diameter pipe pile

大直径管子  big-inch pipe

大直径径向渗透率仪  full diameter radial permeameter

大直径螺栓  big diameter bolt; large diameter bolt

大直径螺纹  large-diameter thread

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

大直径直缝埋弧焊管  Large-sized LSAW pipe

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