... .DIN,SMS,ISO,IDF,AS,BS,BPE Standard Stainless Steel Seamless Pipe (ISO9001:2008,CE,TUV certified)Specification: DN10- ... : Mirror polishing(180G,240G,400G),inner surface mechanical polished Ra less than 0.4 - 0.8μm ... , outer surface glass polished Ra less than 0.8μm. Standard: DIN, ... sight glass,manhole cover,cleaning ball,centrifugal pump,pipe holder etc... Order requirements 1.Quantity and ...