stainless steel pipe,seamless tube Type:round,square,rectangular Standard:ASTM,A554,A269 Grade:201,304,202,301,316,316L stainless steel pipes, seamless tube Standard ... :0.25mm-3mm Length:6m(Customized) Size:Round pipes-Outside diameter(mm)9.5,12.7,16,17,18,19,20 ...