Chicago Metal Rolled Products, a company that specializes in roller coaster track, fabricated the addition’s columns using a technique called “round tube bending”— a cold process by which straight 8-foot-long hollow tubes are pushed through a series of dies and rollers to bend them into a desired shape.  Search “kianna+dior+tube<精仿+微wxmpscp>” from A Mind-Bending Renovation Brings a Bold, Modern Addition to an Old Farmhouse

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Chicago Metal Rolled Products, a company that specializes in roller coaster track, fabricated the addition’s columns using a technique called “round tube bending”— a cold process by which straight 8-foot-long hollow tubes are pushed through a series of dies and rollers to bend them into a desired shape.