female thread union,made of forged carbon steel ASTM A105,high pressure, precise processed,easy to install,reliable quality. Features for female thread union: Nominal Diameter: 1/4", -4"Nominal Pressure: 2000LB, 3000LB, 6000LB Applicable Medium: water.steam. oil.ect,Optional Materials: ASTM A105, SS321, 304,304L, 316, 316L...