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METAL ROUND PIPE, HEAT EXCHANGER COMPRISING THE SAME, PIPE BENDER AND METHOD FOR BENDING METAL ROUND PIPE
METAL ROUND PIPE, HEAT EXCHANGER COMPRISING THE SAME, PIPE BENDER AND METHOD FOR BENDING METAL ROUND PIPE
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机译：金属圆管，包括该金属圆管的换热器，管材弯曲件和弯曲金属圆管的方法
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摘要
To provide a metal round pipe capable of suppressing a decrease in cross section of a flexure part or in minimum inner width, obtaining an advantageous point such as reducing a channel resistance, and being manufactured easily and suitably.SOLUTION: A metal round pipe 1 having a flexure part 10 makes an outermost peripheral part 13 of the outside half part 11b of the peripheral wall part 11 of the flexure part 10, in a cross sectional view in the axial direction of the flexure part 10, at the center part in a y direction orthogonal to an inner/outer peripheral direction x of the flexure part 10, and is outwardly convex in a non-arcuate form the distance of which from an intermediate part 15 between a pair of base end parts 14 of the outside half part 11b and the outermost peripheral part 13 to the pipe center O is shorter than the distance La from this outermost peripheral part 13 to the pipe center O.SELECTED DRAWING: Figure 1
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