... name:black steel seamless pipes 2,size:1/2"~48" 3,wall thickness:1.5mm~160mm 4,delivery time:7days TypeSeamless steel pipeSizeSeamless ... XXS and so on.StandardsANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 ... 2616, JIS P2311/2312 MaterialASTM A106,A53GRB,A53-A,A106-A,A192,A226,A315-B,A106-B,A178-C,A210-A-1 ... balance against with the copy of B/L) black steel seamless pipe