1.ISO9001:2008,CE,TUV certified. 2.DN15-DN300,1/2"-12".AISI304, ... ,ISO,IDF,AS,BS,BPE Standard Stainless Steel Seamless Pipe (ISO9001:2008,CE,TUV certified)Specification: DN10-DN300, 1/2"-12", ... cross,reducer,sight glass,manhole cover,cleaning ball,centrifugal pump,pipe holder etc...Order requirements 1.Quantity and Size.2 ... them according to any design. Sanitary Stainless Steel Seamless Pipe(tube)