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  1. childressva01

    API 5L X42 Pipe

    I am about to spec an arch bridge which uses circular pipe for the arch (16" dia) and tie (11.75" dia). I have been told that it will probably be API 5L pipe. I assume this is differnet from the ASTM specs quoted in the AISC HSS Steel Design Manual. How is the API 5L formed? Although the...

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