A forged street elbow threaded is a type of pipe fitting that is used to join two pieces of pipe or tubing at a 90-degree angle. It has a female fitting on one end and a male fitting on the other, which allows it to be connected to pipes with either male or female threads. Forged street elbows are typically made from carbon steel, stainless steel, or alloy steel, and are available in a variety of sizes and bend angles. Specifications: Material: Carbon steel, stainless steel, or alloy steel Size: 1/8" NB to 4" NB Bend angle: 90 degrees Thread type: NPT or BSP Pressure rating: 150 psi to 2500 psi Temperature rating: -65 F to 1200 F