long radius(LR) pipe elbow

long radius(LR) pipe elbow Product specifications 1.Size Seamless elbow: 1/2” ～24”, DN15～DN600 OD21MM～610MM Welded Elbow: 4” ～78”, DN100～DN1900 OD114MM～1980MM 2.Wall Thickness sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100, sch120, sch140, sch160, xxs, sch5s, sch20s, sch40s, sch80s Max wall thickness: 150mm 3.Materials of LR Pipe Elbow Carbon steel: ASTM/ASME A234 WPB-WPC, ST37, Alloy steel:ST52,12CrMo, 15CrMo,WP 1-WP 12,WP 11-WP 22 ,WP 5-WP 91-WP 911 Stainless