... ;GBGB12459; SH3409 Material:alloy Certificate:ISO9001:2008 Major Radius STD 90 Elbow1.According to R: Major Radius or Semi- ... to Pressure Grade:Sch5s,Sch10s,Sch10,Sch20,Sch30,Sch40s,STD,Sch40,Sch60,Sch80s,XS;Sch80,Sch100,Sch120,Sch140,Sch160,XXS3 ... . According to degree: 45,90,180 as LR STD 90 sch84. SH3406;SH3408;SH3409; SH3410;DL/T515; ASME ... ;SY/T5257; ASME/ANSI B16.11 Major Radius STD 90 Elbow