There is good bond between the concrete in steel pipe and the beam' s main steel bars passing through the small holes in steel pipe.

主要原因是穿过圆钢管的梁主筋与钢管内的混凝土有很好的粘结；

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Sunny steel Enterprise Ltd., with strong support of our customers from around the world, we are a professional supplier in steel pipe and pipe fitting.

钢之阳企业有限公司，与广大客户的大力支持，来自世界各地，我们是在钢管和管件的专业供应商。

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The utility model has the advantages that the utility model is simple in structure, convenient to assemble and operate and stable in steel pipe water quenching quality.

本实用新型具有结构简单，安 装操作方便，钢管水淬质量稳定等优点。

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Lone Star Technologies, a Dallas producer of steel pipe used in oil wells, fits the bill.

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They know that steel pipe cased in concrete, when engineered correctly, is not going to leak chemicals into their water.

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