ASTM A182 F304 Nipple, SCH 80, ASME B36.10
ASTM A333 Nipple, LTCS, SCH 160, PE
ASME B36.10 Pipe Nipple, ASTM A106 Gr.B, SCH160
ASME B36.10 Threaded Nipple, ASTM A106 Gr.B, 1/2 Inch, NPT