ERW LINE PIPE - 1 INSTALLED PIPE, ESPECIALLY PRE-1970, PLAGUED BY PROBLEMS

John F. Kiefner Kiefner & Associates Inc. Worthington, Ohio Understanding the manufacture and unique problems of electric-resistance welded (ERW) line pipe can aid operators in safely maintaining and using existing ERW pipe and in sharpening key requirements when they specify new ERW materials. Evidence that inferior ERW pipe has been manufactured and installed, especial before 1970, abounds not only in pipeline accident statistics1-2 but also in the investigations of individual pipeline

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