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
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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 clipwww.bzxz.net 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||600×600×100 600×800×100 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. Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.