1 Material: SS304/316. 2Standard :ISO/DIN/SMS/3A. 3connection:welded/ quick-install. acc clients' design POLISHED OUT/INSIDE Sanitary 90 degree long bend elbow(1)SS304/316(2)Standard: DIN,SMS,ISO,3AACCEPT OEM DESIGN , SPECIAL DESIGN, CUSTOMIZED Shanghai BEND , ELBOW