... 1.Material:SS304. 316L 2.Cert:ISO2001:2008 3.Process:Machined and mirror polished 4.7years experience export to Euro ... /C,T/TDetailed Product Description 1.Type: stainless steel sight glass 2.Material :stainless steel 304, 304L, 316, 316L,3 ... Steel Welded cross sight glassStainless Steel Welded cross sight glass(fluid equipment,pipe fitting,sight glass,sanitary pipe fitting,stainless steel fitting)