stainless steel seamless pipe diameter :20-600mm length: 1--6m Grade:201,202,301,304,321,316,316L,310S,410,430 namestainless steel seamless pipeSize ... : As customers' requestsStandardASTM/A249, A312, GB151, GB12771, HG20537MaterialGrade: 304, 304L,310s 316, 316L,321,840SurfaceStain Direction / Mirror / Custom ... ,balcony balustades,furniture,sanitary wares,kitchen wares stainless steel seamless pipe