... Elbows, 180 Deg. LR Elbow,180 Deg. SR Elbow, 45 Deg. LR Elbow, 45 Deg. SR Elbow 2, Thickness: SCH20, SGP, STD ... , SCH40, XS, SCH80, SCH160, XXS 3, Dimension: 1/2" to 48" 4 ... B23137,Threaded end: NPT/BSTPCertificate: ISO ,API , Delivery time: 20days 45 Deg Carbon steel elbow(LR)