Stainless steel sanitary pressure manhole,wenzhou manhole cover

Mane: wenzhou manhole cover

1.material :stainless steel 
2.polished inside outside
3.use on pressure or no pressure tank

4.Material :AISI304 , AISI316L

5.Type: square,circular, elliptical, handhole cover

7.Function:It is used as cap on the top of the vessel ,tank etc.

8.Fineness: inner and outer fineness of mirror Ra≤0.8μm,inner and outer mechanical polish and electrical polish Ra 0.2μm,external surface can be gross polished or sub-gross polished.