Marerial：Carbon Steel; Alloy steel; Stainless steel Technique：Seamless, Butt welding(BW),Threaded(THR) Size：1/2”-80” Thickness ：Sch 10—SchXXS Standard：ANSI,ASME,GB,JIS,DIN,API NPS OD, D Center to End 90 deg Elbows,  A 45 deg Elbows,  B  1/2 21.3 38 16  3/4 26.7 38 19 1 33.4 38 22 1 ¼ 42.2 48 25 1 ½ 48.3 57 29 2 60.3 76 35 2