stainless steel seamless pipe 1.Type:round,square,rectangular 2.Standard:ASTM,A554,A269 3.Grade:201,304,202,301,316,316L stainless steel pipes, seamless pipe:Standard:ASTM ... ,38x25,40x20,48x23,50x15,50x25,60x15,60x30,73x43,75x45,95x45 stainless steel seamless pipe