This standard specifies the product classification, technical requirements, test methods and inspection rules for small steel hatch covers (hereinafter referred to as hatch covers). This standard is applicable to small hatch covers for various types of ships. CB/T 3728-1995 Small Steel Hatch Covers CB/T3728-1995 Standard download decompression password: www.bzxz.net

Shipbuilding Industry Standard of the People's Republic of China
CB/T 3728-1995
Steel Small Hatch Covers
Published on December 19, 1995
Published by China State Shipbuilding Corporation
Implemented on August 1, 1996
Shipbuilding Industry Standard of the People's Republic of China
Steel Small Hatch Covers
This standard is not equivalent to the international standard ISO5778--1994 "Shipbuilding 1 Subject Content and Scope of Application" B/T3728--1995
Classification number: U26
Replacement: CB*28476
CB'3069-79
CB*3081-—80
CB'3222-
CB*3223-—84
CBM2063-—82
CBM2012—81
Steel small weathertight hatch covers".
This standard specifies the product classification, technical requirements, test methods and inspection rules for steel small hatch covers (hereinafter referred to as hatch covers). This standard applies to small hatch covers for various types of ships. Reference standards
GB8923 Surface rust grade and rust removal grade of steel before paintingCB*3273 Tightness test of ship doors, windows and coversCB/T3324 Accuracy requirements for steel sun-drying parts
3 Product classification
The types of hatch covers are shown in Table 1.
Single-side opening and closing weathertight hatch cover
Double-side opening and closing weathertight hatch cover
Quick opening and closing weathertight hatch cover
Buried weathertight hatch cover
Single-side opening and closing non-weathertight hatch cover
Double-side opening and closing non-weathertight hatch cover
Structural features
Wing nut clip
Mold handle clip
Center rotating handle clip
Reversible wedge handle clip
Wing nut Clip
Handle Clip
China State Shipbuilding Corporation 1995-12-19 approved nominal size
450×630
530×530
630×630
630×830
450×630
530×530
630×630
630×830
830×830
830 ×1230 | 0×630
530×530
630×630
630×830||tt ||830×830
630×830
830×830
450×630
630×830
530×530
830×830
630×630
Implemented on August 1, 1996
CB/T3728-1995
3.1.1 The structural type and basic dimensions of type A hatch covers are shown in Figure 1 and Table 2. A830×830
A830×1230
Short side installation hinge
A1330×1330
—hinge; 2 clip; 3 cover; 4 seal; 5 enclosure; 6 handle; 7 lock; 8 balance block
A450×630
Long side installation hinge
A530×530
A630×630
630×830
Nominal size
450×630
53 0 × 530 | | tt | | 630 × 630 | | tt | 500×500×100
600×600×100
600×800×100
800×800×100
800×12 00 × 100 | | tt | | 1000 × 1000 × 100 | | tt | | 1300 × 1300 × 100 | | tt | 6
588×588
592×592
596×596
688×688
692×692||tt| |696×696
688×888
692×892
696×896
888×888
892×892
896×896
888×1288
892×1292
896×1296
1092×1092
1096×1096
1396×1396
Note: 1) The weight in the table does not include the weight of the coaming. 2) The height and thickness of the coaming are determined by the user. 3) The size specifications are consistent with ISO5778. 4) The weight includes the balance block.
Thickness of cover
Thickness to
3.1.2 The structural type and basic dimensions of type B hatch cover are shown in Figure 2 and Table 3. Plate 2
Height H
Wing nut clip
B830×830
B830×1230
Rectangular edge installation calibration chain
Nominal size
450×630
530×530
630×630
630×830
830X830
830×1230
CB/T3728-1995||t t||1-hinge;2-stopper;3-cover plate;4-molded handle clip;5-seal;6-ring plate;7-lock
Through hole size
420×600×100
500×500×100
600X600X100
600×800×100
800×800×100
800×1200×100
Note: 1) The weight in the table does not include the weight of the enclosure. Cover plate size
508X688
512×692
516×696
588×588
592×592
596X596
688X688
692X692
696X696
688×888
692×892
696×896
888×888
892×892
896×896
888X1288
892X1292
2) The height and thickness of the enclosure are determined by the user. Cover plate thickness
Thickness t.
Height H
B450×630
Long side hinge
B530×530
B630×630
B630×830
Wedge-shaped handle clip
Weight》
CB/T3728—1995
3.1.3 The structural type and basic dimensions of type C hatch cover are shown in Figure 3 and Table 4, L×B
1-spring hinge; 2-center rotating handle clip; 3-cover plate; 4-seal; 5-coaming; 6-lock Table 4
Nominal size
530×530
630×630
Through hole size
L×B,XR
500×500×100
600×600×100
Note: 1) The weight in the table does not include the weight of the coaming. Cover plate size
588×588
592×592
596×596
688×688
692×692
696×696
2) The height and thickness of the coaming are determined by the user. Cover plate thickness
Thickness to
Height H
Center rotating handle
Number of hand clips
CB/T3728--1995
3.1.4 The structural type and basic dimensions of D-type hatch covers are shown in Figure 4 and Table 5. D530×530
D630×630
D830×830
Nominal size
530×530
630×630
630×830
830×830
L×B(L,×B,×R)
L×B,xR
1-Side panel: 2-Hinge: 3-Stopper: 4-Cover: 5--Reversible handle, 6-Seal 7-Side panel; 8-Lock
Through hole size Size
L, |596×596
688×888
692×692
696×696
688X888|| tt||692×892
696×896
892×892
896X896
Deck opening size
LsXBsXR
622X622X161
622×622×161
626X626X163
722×722×161
722×722×161
726×726×163
72 2×922X161
726X926X163
726X926X163
926×926×163
926X926X163
Cover thickness
Coaming thickness
D630×830
Hinge installed on long side
Handle clip
CB/T3728—1995
3.1.5The structural type and basic dimensions of type E hatch cover are shown in Figure 5 and Table 6. E630×830
Long side installation dumpling chain
xB,×R
E830×830
1-hinge; 2-cover; 3-handle; 4-buffer; 5-surrounding plate; 6-wing nut clip; 7-locking buckle table 6
Nominal size
450×630
530×530
630×630
630×830
830×830
Through hole size
L,×B,XR
420×600×100
500×500×100||t t||600×600×100
600×800×100
800X800×100
Note: 1) The weight in the table does not include the weight of the coaming, and the size of the cover plate
508×688
512×692
588×588
592×592
688×888
692×692
688×888
692×892
888×888
892×892
2) The height and thickness of the coaming are determined by the user. Cover plate thickness
Moisture t.
Height H
Wing nut clip
E450×630
E530×530
E630×630
Weight\, kg
CB/T3728-1995
3.1.6 The structural type and basic dimensions of F-type hatch covers are shown in Figure 6 and Table 6. F630×830
.XB.XA
F830×830
3.2 Node details
1 Hinge; 2-stopper; 3-cover plate; 4-wedge handle clip; 5-buffer; 6-coaming; 7-lock 3.2.1 The node type of weathertight hatch covers is shown in Figure 7. Seal 45×20
Nominal size
Adhesive
F450×630
F530×530
F630×630
CB/T3728-~1995
3.2.2 The node type of non-weathertight hatch cover is shown in Figure 8. Buffer 30×3
Nominal size
3.3 Hatch cover accessories
3.3.1 The types of hatch cover accessories are shown in Table 7. Table 7
Wing nut clip
Wedge handle clip
Reversible handle clip
Center rotating handle clip
Oval hole limited hinge
Oval hole unlimited hinge
Round hole limited hinge
Round hole unlimited hinge
Spring hinge
Horizontal hinge
Stop
Adhesive
CB/T3728-1995
3.3.2 The structural type and basic dimensions of K-type clips are shown in Figure 9 and Table 8. Figure 9
1—Wing nut; 2—Pressure plate; 3—Bolt; 4—Washer; 5-Pin shaft; 6—Cotter pin; 7-Base Table 8
Note: h2 size is for reference.×R
530×530x115
630×630×115
630×830×115
830×830X115
Cover size||tt| |588×588
592×592
596×596
688×888||t t||692×692
696×696
688X888
692×892
696×896
892×892
896X896
Deck opening dimensions
LsXBsXR
622X622X161
622×622×161
626X626X163
722×722×161
722×722×161
726×726×163
722×922X161| |tt||726X926X163
726X926X163
926×926×163
926X926X163
Cover thickness
Side thickness
D630×830
Hinges installed on long side
Handle Clip
CB/T3728—1995
The structural type and basic dimensions of 3.1.5E type hatch cover are shown in Figure 5 and Table 6. E630×830
Long side installation of dumpling chain
xB,×R
E830×830
1-hinge; 2-cover; 3-handle; 4 —Buffer; 5-Shroud plate; 6-Wing nut clip; 7-Lock Table 6
Nominal size
450×630
530×530
630×630
630×830
830×830
Through hole size
L,×B,XR
420×600×100|| tt||500×500×100||t t||600×600×100
600×800×100
800X800×100
Note: 1) The weight in the table does not include the weight of the enclosure and the size of the cover||tt ||508×688
512×692
588×588
592×592
688×888
692×692
688×888
692×892
888×888
892×892
2) The height and thickness of the enclosure are determined by the user. Cover thickness| |tt||Modu t.
Height H
Wing nut clip
E450×630
E530×530
E630×630
Weight\, kg
CB/T3728-1995
3.1.6 The structural type and basic dimensions of F-type hatch covers are shown in Figure 6 and Table 6. F630×830
.XB.XA||tt ||F830×830
3.2 Node details
1 hinge; 2-stopper; 3-cover plate; 4-wedge-shaped handle clip; 5-buffer; 6-enclosure; 7- 3.2.1 The node type of weathertight hatch cover is shown in Figure 7. Seal 45×20
Nominal size
Adhesive
F450×630
F530×530
F630×630
CB/ T3728-~1995
3.2.2 The node type of non-weathertight hatch cover is shown in Figure 8. Buffer 30×3
Nominal size
3.3 Hatch cover accessories||tt ||3.3.1 The types of hatch cover accessories are shown in Table 7. Table 7
Wing nut clip
Wedge-shaped handle clip
Moldable handle clip
Center rotating handle clip
Oval hole Limited hinge
Elongated hole unlimited hinge
Round hole limited hinge
Round hole unlimited hinge
Spring hinge
Horizontal hinge|| tt||Stop
Adhesive
CB/T3728-1995
3.3.2 The structural type and basic dimensions of K-type clips are shown in Figure 9 and Table 8. Figure 9| |tt||1—wing nut; 2—pressure plate; 3—bolt; 4—washer; 5-pin; 6—split pin; 7-base table 8
Note: h2 size is for reference only.×R
530×530x115
630×630×115
630×830×115
830×830X115
Cover size||tt| |588×588
592×592
596×596
688×888||t t||692×692
696×696
688X888
692×892
696×896
892×892
896X896
Deck opening dimensions
LsXBsXR
622X622X161
622×622×161
626X626X163
722×722×161
722×722×161
726×726×163
722×922X161| |tt||726X926X163
726X926X163
926×926×163
926X926X163
Cover thickness
Side thickness
D630×830
Hinges installed on long side
Handle Clip
CB/T3728—1995
The structural type and basic dimensions of 3.1.5E type hatch cover are shown in Figure 5 and Table 6. E630×830
Long side installation of dumpling chain
xB,×R
E830×830
1-hinge; 2-cover; 3-handle; 4 —Buffer; 5-Shroud plate; 6-Wing nut clip; 7-Lock Table 6
Nominal size
450×630
530×530
630×630
630×830
830×830
Through hole size
L,×B,XR
420×600×100|| tt||500×500×100||t t||600×600×100bzxZ.net
600×800×100
800X800×100
Note: 1) The weight in the table does not include the weight of the enclosure and the size of the cover||tt ||508×688
512×692
588×588
592×592
688×888
692×692
688×888
692×892
888×888
892×892
2) The height and thickness of the enclosure are determined by the user. Cover thickness| |tt||Modu t.
Height H
Wing nut clip
E450×630
E530×530
E630×630
Weight\, kg
CB/T3728-1995
3.1.6 The structural type and basic dimensions of F-type hatch covers are shown in Figure 6 and Table 6. F630×830
.XB.XA||tt ||F830×830
3.2 Node details
1 hinge; 2-stopper; 3-cover plate; 4-wedge-shaped handle clip; 5-buffer; 6-enclosure; 7- 3.2.1 The node type of weathertight hatch cover is shown in Figure 7. Seal 45×20
Nominal size
Adhesive
F450×630
F530×530
F630×630
CB/ T3728-~1995
3.2.2 The node type of non-weathertight hatch cover is shown in Figure 8. Buffer 30×3
Nominal size
3.3 Hatch cover accessories||tt ||3.3.1 The types of hatch cover accessories are shown in Table 7. Table 7
Wing nut clip
Wedge-shaped handle clip
Moldable handle clip
Center rotating handle clip
Oval hole Limited hinge
Elongated hole unlimited hinge
Round hole limited hinge
Round hole unlimited hinge
Spring hinge
Horizontal hinge|| tt||Stop
Adhesive
CB/T3728-1995
3.3.2 The structural type and basic dimensions of K-type clips are shown in Figure 9 and Table 8. Figure 9| |tt||1—wing nut; 2—pressure plate; 3—bolt; 4—washer; 5-pin; 6—split pin; 7-base table 8
Note: h2 size is for reference only.
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