1)sch40/sch80/xs steel pipe 2)OD:1/2"-48" 3)WT:1 ... and so on.StandardsANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 / ... 2616, JIS P2311/2312MaterialASTM A106,A53GRB,A53-A,A106-A,A192,A226,A315-B,A106-B,A178-C,A210-A-1 ... concentric reducers ;sprial welded steel pipe (SSAW),seamless steel pipe (SMLS) ,and LSAW pipe! The sizes: Pipe fittingType:elbows, reducers,tees, ...