
SPECIFICATION FOR SCREWED AND SOCKETED STEEL TUBES AND TUBULARS AND FOR PLAIN END STEEL TUBES SUITABLE FOR WELDING OR FOR SCREWING TO BS 21 PIPE THREADS
出版:British Standards Institution

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Lays down requirements for screwed and socketed steel tubes and tubulars and for plain end steel tubes for welding or for screwing pipe threads. Applicable to tubes of size DN 8 to DN 150 in three series of thickness, designated light, medium and heavy. Covers mechanical properties, appearance and soundness, visual inspection, hot-dip zinc coating, longscrews, bends and springs, return bends and more.