... .hole no.:1,7,19,37 3.Al2O3 + ZrO2 4.stainless steel housing 5.ISO 9001:2008 About us:OSD is specialized in ... Specifications:OSD Ceramic membrane module specModelTube No.Membrane area (m2)Housing material7K-1-CL11316L7K-7-CL77316L19K-1-CL11316L19K-19-CL1919316L37K-1 ...