Description
Hatch cover chain is a chain system used to connect and secure hatch covers on ships, and its main function is to ensure that hatch covers are stable and safe during opening, closing, and transportation, while facilitating operation and maintenance. It is an indispensable part of the design of the cargo hold of ships, especially in bulk carriers and container ships.
Raw material: manganese steel 20Mn2
Surface treatment: hot-dip galvanized, original color, black lacquer
Delivery: regular spot, normal delivery time is 5-15 days
Executive standard: The national standard GBT 12718-2009 has been implemented for the production of marine hatch cover chains, and the common specifications are 11*43, 14*50, 16*55, 18*64, 22*86, 30*108MM, etc
Technical parameters
| 舱盖链条HATCH BOARD CHAINS | ||||||
| 规格 Size (mm) | 内长 pitch(mm) | 内宽 inside width min (mm) | 安全工作负荷 Working load (KN) | 破断试验负荷 Breaking load (KN) | 试验负荷 Test load(KN) | 重量 Weight (KG ) |
| 11 | 43 | 12.5 | 38 | 116 | 57 | 2.39 |
| 14(A) | 50 | 17 | 60.25 | 194 | 97 | 3.95 |
| 14(B) | 42 | 18 | 97 | 194 | 97 | 4.32 |
| 15 | 42 | 21 | 106 | 212 | 106 | 5.2 |
| 16(A) | 55 | 22 | 128 | 254 | 128 | 5.34 |
| 16(B) | 55 | 24 | 128 | 254 | 128 | 5.29 |
| 18(A) | 54 | 18 | 161 | 322 | 161 | 7.12 |
| 18(B) | 64 | 25 | 102 | 322 | 161 | 6.32 |
| 19 | 57 | 24 | 164 | 330 | 164 | 7.6 |
| 20(A) | 60 | 22 | 129 | 359 | 129 | 9.5 |
| 20(B) | 62 | 22 | 179 | 359 | 179 | 8.57 |
| 22(A) | 78 | 31 | 240 | 480 | 240 | 9.86 |
| 22(B) | 86 | 30 | 240 | 480 | 240 | 9.24 |
| 22(C) | 66 | 31 | 240 | 480 | 240 | 10.6 |
| 30 | 108 | 35 | 399 | 798 | 399 | 18.22 |
The main role of the hatch cover chain
1. Firmly connect the hatch cover with the hull to prevent the hatch cover from shifting or falling off due to wind and waves or ship movement.
2. During the opening or closing of the hatch cover, the chain can provide a certain cushioning and guiding effect to prevent the hatch cover from directly hitting the hull or other structures.
3. Bearing and protection: During the loading or transportation of the cargo hold, the hatch cover chain can bear a certain load to prevent the hatch cover from being damaged or displaced.
Packaging
