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square manhole cover with pressure
1,Type:Circular,square,elliptic
2,With pressure or without pressure
3,Material quality:AISI304,AISI316L
Fineness:Inner surface mechanical polish Ra<0.4-0.8um
Our surface gloss polished or dull polished Ra<0.8um
square manhole cover with pressure,stainless steel manhole cover,sanitary manhole cover
square manhole cover with pressure