He pumau pai te puarahi matao o Q345B, he tino pumau.The epoxy resin coating center is reinforced welded steel pipe. The combination of this structure allows the steel pipe to have better stability. Ehara i te mea he mahara kau te pipa ki te kopere i te kanohi o aua mea koreotive, engari i te mea e taea ana e ia te whakanekehanga i te mea e taea ana e ia te whakanekehanga, koia te pipa karere matao e kore e taea e ia te hanga i muri i te mahi, a ka taea e ia te whakanekehia te ora o te pūpa
