DIN 5683 Long Link Chain is a welded long link chain manufactured according to the German industrial standard DIN 5683, specifically designed for buoy mooring. This chain is made of high-quality alloy steel and is suitable for various general applications including marine, engineering, agriculture, and industry.
The DIN 5683 standard series consists of three parts:
DIN 5683-1: Round steel link chain (buoy chain), Class 4
DIN 5683-2: Accessories (shackles, swivels, etc.)
DIN 5683-3: Complete anchor chain assembly
DIN 5683 Long Link Chain Diagram:

Specification of DIN 5683 Long Link Chain:
| Dia | Length | Width | Weight | Proof Load | Break Load |
| (mm) | (mm) | (mm) | (Kg/m) | (KN) | (KN) |
| 13 | 36 | 44 | 3.9 | 26 | 210 |
| 16 | 144 | 88 | 4.3 | 32 | 161 |
| 18 | 162 | 99 | 5.5 | 41 | 203 |
| 20 | 180 | 110 | 6.8 | 50 | 251 |
| 23 | 207 | 127 | 8.9 | 66 | 332 |
| 26 | 234 | 143 | 11.4 | 85 | 425 |
| 30 | 270 | 165 | 15.2 | 113 | 565 |
| 33 | 297 | 182 | 18.3 | 137 | 684 |
| 36 | 324 | 198 | 21.9 | 163 | 815 |
| 39 | 351 | 214 | 25.7 | 191 | 955 |