90 deg seamless bend 1,8" 2,STD 3,A234WPB 4,ASMEB16.9 sizeSeamless: ... "( or as customer requirements)angle22.5 deg, 30deg,45 deg,90 deg,180 deg, 1.0D, 1.5D, 2.0D, 2 ... , papermaking, construction, etcSpecial design available as the requirement of customer 90 deg seamless bend