... , we are qualified and permitted to produce pressure pipeline unit for oil, chemical industry, and electricity group. Meanwhile, we have become ... . SR Elbow 2, Thickness: SCH20, SGP, STD, SCH40, XS, SCH80, SCH160, XXS 3, Dimension: 1/2" to 48" 4, Material: carbon steel A234 ... end: NPT/BSTPCertificate: ISO ,API , Delivery time: 20days 45 Deg Carbon steel elbow(LR)