Food Grade Rectangle Manhole Cover Zhejiang WanGuo Fluid Equipment Technology Co., Ltd. Base Info Standard.:ISO, DIN, SMS, 3ATrademark:IFECTransport Package:Wooden Cases or Wooden PalletSpecification:400mm, 450mm, 500mm, 600mmOrigin:Zhejiang, China Description Pre:AISI304 AISI316L Inwards Opening Oval Manway Door Next:AISI304 AISI316L Round Pressure Manhole with Insulated Lid