Standards :ASME / ANSI - B 16.9, ASTM A403 - ASME SA403, ASME B16.9, ASME B16.25, ASME B16.28, MSS SP-43. Size:1/2"NB TO 48"NB IN Thickness: Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc. Form: Equal Tee, Unequal Tee, Barred Tee, Lateral Tee, Reducing Tee. Material: ASTM A234WPB, A234WPC, LTCS, 16Mn, Etc