... "-72" Thickness: SCH20-XXS Material: carbon steel (seam & seamless) Qualification: ISO9001, API, CE, Size:from 1/2" to ... , 90 Deg, 180 DegThickness:SCH20, SCH30, SCH40, STD, SCH80, SCH100. SCH120, SCH160. XXSStandard: ASTM A234 MSS SP-75 ... carbon steel (seam & seamless)Qualification: ISO9001, API, CE,Packing:wooden cases & palletsSpecial design available as the requirements of customer seamless elbow