Steel Hatch Cover
Steel Hatch Cover
CB/T3728-1995
Used for various ships, to meet ISO 5778-1994.
| Type | Name | Structure | Nominal size L×B | Hinge position |
|---|---|---|---|---|
| A | Single side opening, weathertight | Wing nut clamp | 450 x 630, 530 x 530, 630 x 630, 630 x 830 | A (Four sides equal) / AL (Long side) / AS (Short side) |
| B | Double sides opening, weathertight | Wedge clamp | 450 x 630, 530 x 530, 630 x 630, 630 x 830 | B (Four sides equal) / BL (Long side) / BS (Short side) |
| C | Quick action, weathertight | Rotary clamp | 530 x 530, 630 x 630, 630 x 830 | – |
| D | Flush, non-weathertight | Inverted wedge clamp | 530 x 530, 630 x 630, 630 x 830 | D (Four sides equal) / DL (Long side) / DS (Short side) |
| E | Single opening, non-weathertight | Wing nut clamp | 450 x 630, 530 x 530, 630 x 630, 630 x 830 | E (Four sides equal) / EL (Long side) / ES (Short side) |
| F | Both sides opening, non-weathertight | Wedge clamp | 450 x 630, 530 x 530, 630 x 630, 630 x 830 | F (Four sides equal) / FL (Long side) / FS (Short side) |
Type A
| Type | Nominal size L×B | Clear size L1×B1×R1 | Cover size L2×B2 | Cover thickness | Hatch height H | Wing nut | Weight (Note1) | |
|---|---|---|---|---|---|---|---|---|
| Dia. | Qty. | |||||||
| A | 450 x 630 | 420 x 600 x 100 | 508 x 688 | 4, 6, 8 | 150 | M16 | 4 | 24.4, 31.1, 37.7 |
| 530 x 530 | 500 x 500 x 100 | 588 x 588 | 4, 6, 8 | 100 | M16 | 4 | 24.2, 30.8, 37.4 | |
| AL | 630 x 630 | 600 x 600 x 100 | 688 x 688 | 4, 6, 8 | 200, 250 | M16 | 4 | 37.4, 48.5, 59.8 |
| 630 x 830 | 600 x 800 x 100 | 688 x 888 | 4, 6, 8 | 200, 250 | M20 | 4 | 48.5, 60.6, 75.3 | |
| AS | 830 x 830 | 800 x 800 x 100 | 888 x 888 | 4, 6, 8 | 200, 250 | M20 | 4 | 47.1, 61.2, 75.3 |
| 830 x 1230 | 800 x 1200 x 100 | 888 x 1288 | 4, 6, 8 | 200, 250 | M20 | 4 | 65.2, 85.3 | |
| 1030 x 1030 | 1000 x 1000 x 100 | 1088 x 1088 | 4, 6, 8 | 600 | M20 | 4 | 175.3 (Note4), 146.6 (Note4), 190.9 (Note4) | |
| 1330 x 1330 | 1300 x 1300 x 100 | 1396 x 1396 | 4, 6, 8 | 800 | M20 | 4 | 331.3 (Note4) |
Note1: Weight doesn’t include board.
Note2: Hatch height and thickness to buyer’s choice.
Note3: Size meets ISO5778.
Note4: Excluding counterweight.
Identification example (Type A)
Nominal size of 630×630mm, cover thickness 6mm, hatch height 200mm;
Steel hatch cover A630 x 630 x 6 – 6 x 200 CB/T3728-1995.
Nominal size of 630×630mm, cover thickness 6mm, hatch height 200mm, equal side;
Steel hatch cover A LB×630×630, t=6, h=200, CB/T3728-1995.
Type B
| Type | Nominal size L×B | Clear size L1×B1×R1 | Cover size L2×B2 | Cover thickness | Hatch height H | Wedge clamp | Weight (Note1) | |
|---|---|---|---|---|---|---|---|---|
| Qty. | ||||||||
| B | 450 x 630 | 420 x 600 x 100 | 508 x 688 | 4, 6, 8 | 150 | 4 | 28.7, 35.4, 42.0 | |
| 530 x 530 | 500 x 500 x 100 | 588 x 588 | 4, 6, 8 | 100 | 4 | 28.5, 35.1, 41.7 | ||
| BL | 630 x 630 | 600 x 600 x 100 | 688 x 688 | 4, 6, 8 | 200, 250 | 4 | 42.4, 51.2, 59.7 | |
| 630 x 830 | 600 x 800 x 100 | 688 x 888 | 4, 6, 8 | 200, 250 | 4 | 51.2, 62.3, 73.5 | ||
| BS | 830 x 830 | 800 x 800 x 100 | 888 x 888 | 4, 6, 8 | 200, 250 | 6 | 63.3, 79.4, 95.4 | |
| 830 x 1230 | 800 x 1200 x 100 | 888 x 1288 | 4, 6, 8 | 200, 250 | 8 | 81.5, 93.5 |
Note1: Weight doesn’t include board.
Note2: Hatch height and thickness to buyer’s choice.
Identification example (Type B)
Nominal size of 630×630mm, cover thickness 6mm, hatch height 200mm, equal side;
Steel hatch cover B630 x 630 x 6 – 6 x 200 CB/T3728-1995.
Note: The description may be different with the product, please contact us for quotation.
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