![Anti ultra pressure sight glass & ultra pressure resistant sight glass(10Mpa,350c°,DN50-PN4.0,ss304)](http://www.tubularglass.com/cdn/shop/files/roundsightglass_9947b1ca-d336-4295-b829-b6fcb0fbd99a_{width}x.jpg?v=1686193932)
Executive standard: HG/T21619-1986
Model: DN50-PN4.0
Flange material: SUS304
Glass: high pressure aluminum-silicon glass 80*20mm; Withstand pressure 10Mpa; Temperature 350℃.
Gasket material: non-asbestos gasket φ82*φ52*2mm
With the goods with the certificate of quality, warranty, test report.