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Iron samples are continuously analyzed using spectroscopy to conform the material quality
9 (except Wall) and MSS SP-43 Manufacturing facility is ISO 9001:2008 Independent lab verification that fittings meet applicable chemical & mechanical properties
accurate threads are machined that comply with the precise standards developed by the Amerian Society of Mechanical Engineers (ASME) and published as an American National Standard
Conforms to ASTM-C1277
3-1/2" x 12" Black Pipe Nipple 90° Street Elbows Iron samples are continuously analyzedmaterial: Black Steel connection: Threaded Thread Type: Male Features: Meets or exceeds all applicable ASTM and ANSI standards Made in The U. S. A.
