Product name: Circular Manhole cover 
Model: YAD 
Material quality: SS304, SS316L 
Specification: 400mm, 430mm, 450mm, 500mm, 600mm 
Standard: 3A/DIN/SMS/ISO 
Applications: Beer, dairy, beverage, pharmacy etc. 

As a professional manufacturer, we can offer all kinds of the sanitary pipe fittings and can manufacture them according to any drawings. 

If you are interested in, pls don't hesitate to contact us. Specification is out of our standard.