Grainger Approved, Solutions That Make a Difference Elbow, 45 Degrees Thick-walled Grainger Approved elbow offers you a simple, economical installation and is ideal for use with water and oil in chemical, petrochemical, pulp, paper, shipbuilding, waste incineration, and semiconductor industry applications. Pipe Fitting Material / Black Forged Steel Fitting Schedule/Class / Class 3000 Pipe Size - Pipe Fitting / 4 in Fitting Connection Type / Socket Weld Standards / ANSI B1.20.1, ASME B16.11 and SA105, ASTM A105 Max. Pressure / 3000 psi@72 Degrees F