STEEL PIPE NIPPLES Imported steel nipples Size= nipple diameter x length Product complies with ASTM A-53, A-733 and - ANSI B1.20.1 for threading, dimensions and - pipe specifications - all are hydrostatic tested Black nipples protected against oxidation with - varnish coating - Galvanized nipples have - zinc coating applied by hot dip process 3/8X8 GALV NIPPLE SIZE:3/8x8" FINISH:Galvanized