foundation underpinning helical pile

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Earth Galvanized Post Anchor Up Ground Pile
Oct 08, 2017

up ground pile is also called the spiral steel pipe or spiral welded pipe, is to put the low carbon structural steel and low alloy steel strip according to certain Angle of helix Angle (called molding) rolled into a tube billet, then up ground pile seam welding made up, it can use a narrow strip in the production of large diameter steel pipe.The helical tube is mainly used for oil and gas pipeline, and its specification is 




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