... A234WPB 3.good quality and reasonable price 90 degree tube elbow Materialcarbon steel, stainless steel, alloy steelTechniquewelded and hot-expandedConnectionweldingHead codebevel ... , 45, 60, 90, and 180°WTSch5-Sch160 ,such as SCH20, SCH40, STD, SCH80, SC100, SCH120, and SCH160StandardANSI,ASME,API5L,DIN,JIS ... otherCertificatesISO-9001/2000Special design available as requirement 90 degree tube elbow