good quality and reasonable price seamless steel pipe,seamless pipe,stainless steel pipe,stainless steel seamless pipe,stainless steel square pipe,ASTM seamless pipe,mirror seamless steel pipeDetailed Product Description 1. Material: 304, 304L, 310S, 316, 316L, 317, 317L, 321, 347, Duplex SS, S31500, S31803, S32750 2. Size: OD:6-630mm, W.T. 0.6-30mm3. Executive standard:ASTMA213, ASTMA312M, ...