Seamless Stainless Steel Pipe(steel pipe,steel tube) Material: TP304, TP304L, TP310 / S, TP316L, TP316 / 316L , TP317L,TP321 1) Commodity: seamless ... / cold pilgered 3) Surface finish: annealed / cold pilgered4) Material: TP304, TP304L, TP310 / S, TP316L, TP316 / 316L dual grade, TP317L, TP321, TP347 ...