Blister were observed in the surface of square pipe after being hot zinc-plated.

方管表面热镀锌后出现不同程度的鼓泡现象。

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Such as: stainless steel pipe, square pipe, rectangular pipe, embossed pipe, threaded pipe, platinum-plated tube.

如：不锈钢圆管、方管、矩管、压花管、螺纹管、镀铂金管等。

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Even slight spiraling motion in a square pipe increases the tendency of particles to be maintained in suspension.

水流在方管中稍有一些螺旋运动，将增加泥沙悬浮在水中的作用。

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Within about a one square mile area around that wellhead and the riser pipe and everything else, at any particular time you could have between 14 and 20 ROVs operating down there.

WHITEHOUSE: Daily Press Briefing