Shaft Column: Flanged, heavy wrought steel pipe encases the pump shaft.
立柱：装有法兰，重型锻钢管包围泵轴。
Sunlight greenhouse structure is steel pipe structure of non-column and large truss depth.
温室结构为无立柱、大跨度桁架钢管结构。
Sunlight greenhouse structure is steel pipe structure of non-column and large truss depth.
温室结构为无立柱、大跨度桁架钢管结构。
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