... and hammer unions: For gas and oil field NPT Standard threaded and socket welded ... FEATURES of Pipe fittings:Products: 45 Degree elbow, 90 degree elbow, tee, cross, coupling, male and female ... , etcMaterial: carbon steel(ASTM A105), alloy steelSize: 1/8" to 4"Condition: parts can be supplied as forged and fully machined, socket welded and ...