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CB/T 3728 Type F None Weathertight Small Steel Hatch Cover with Dog
Description:
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:
Main Technical Parameters:
| Nominal size L×B | Clear size L1×B1×R | Cover size L2×B2 | Cover thickness t | Hatch coaming thickness t0 | Hatch coaming Height H | Butterfly Nut Size | Weight Type E | Weight Type F |
| 450×630 | 420x600x100 | 508×688 | 4 | 4,6 | 100 150 200 | M16 | 20.9 | 22.2 |
| 512×692 | 6 | 6,8 | 27.6 | 28.8 | ||||
| 530×530 | 500x500x100 | 588×588 | 8 | 4,6 | 20.7 | 22.2 | ||
| 592×592 | 4 | 6,8 | 27.3 | 28.5 | ||||
| 630×630 | 600x600x100 | 688×688 | 6 | 4,6 | M20 | 26.3 | 27.0 | |
| 692×692 | 8 | 6,8 | 35.1 | 35.9 | ||||
| 630×830 | 600x800x100 | 688×888 | 4 | 4,6 | 32.5 | 33.1 | ||
| 692×892 | 6 | 6,8 | 43.6 | 44.2 | ||||
| 830×830 | 800x800x100 | 888×888 | 8 | 4,6 | 39.2 | 40.5 | ||
| 892×892 | 6 | 6,8 | 53.3 | 54.5 |
Drawing of CB/T 3728 Type F None Weathertight Small Steel Hatch Cover with Dog Marine Outfitting