YAD sanitary manhole cover 1.Product name: Circular Manhole cover 2.Model: YAD 3.Material quality: SS304, SS316L Specificationsmanhole cover 1.Product name: Circular Manhole cover 2.Model: YAD 3.Material quality: SS304, SS316LYAD sanitary manhole cover 1.Model:YAD2.Material:ss304,ss316L4.Specification: 400mm, 430mm, 450mm, 500mm, 600mm 5.Standard: 3A/DIN/SMS/ISO 6.Applications: Beer, dairy, ...