CB/T 3728 type F small steel hatch cover is none weathertight. It is normally fitted on the deck above position 1 and 2, which required by Loadline Rule. It is fitted with thinner rubber packing which can pass water pouring test. It is normally fitted with one dog or one butterfly nut only
Main Technical Specification:
Standard: CB/T 3728-2011
Material: Mild Steel, Stainless Steel,
Packing Materials: Neoprene, NBR ,Hi - NBR,
Dimension: As Standard or Customized, As client’s drawing,
Application Type: None weathertight
Closing Type: Hinged, one dog or one butterfly nut
Surface treatment: sandblasting to S2.5 + one layer of epoxy shop primer, Polished, Galvanized, customized surface treatment available.
Mill Certificate