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CHAIN CABLE Stud Link Chain Cables up to 70mm diameter are generally produced in the length of 27.5 mtrs of half length of 13.75 mtrs. These can be produced to desired shorter or longer length also. We also manufacture Open Link Chains for Mooring buoys. ACCESSORIES Accessories like Kenter Shackles, 'D' Type Joining Shackles, Anchor Shackles (End Shackles), Swivel Adapters etc. are produces in our own forge shop and precision machined. Special naval requirements of Box Swivel Adapters, Screw Stoppers, Blake Stoppers, and Senhouse slips are also catered to. ANCHOR Cast steel and fabricated anchors upto 10 Tonnes are manufactured in various types and designs and tested in our testing machine. |
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MATERIAL The Steel used for the manufacture of chain cables and accessories is procured from modern steel plants. It is fully killed fire grain steel manufactured by latest steel making technology. Anchors are cast or fabricated. |
MECHANICAL PROPERTIES |
Grade | Heat Treatment | Tensile Strength N/mm2 | Yield Stress N/mm2 | Elongation % (min) | R.A. % (min) | Charpy V Notch Impact Test | Test Temp. | Avg. Energy Joules (Min) | U1 | Normalised | 300-490 | - | 25 | - | - | - | U2 | Normalised | 490-690 | 295 | 22 | - | - | - | U3 | Quenched & Tempered | Min. 690 | 410 | 17 | 40 | 0oC | 60 50(weld) | |
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MANUFACTURING PROCESS Chains are welded on automatic flash butt welding machines. The weld areas is trimmed all around the weld on specially designed machines to give a smooth weld. Studs are hydraulically pressed in the link. |
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HEAT TREATMENT To ensure required physical properties and homogeneous grain structure, all chain are heat treated in automatic controlled furnaces. |
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INSPECTION AND TESTING Proof and Break Load testing of each chain and accessories is carried out on 500 Tonnes capacity Horizontal Testing Machine. Visual link by link inspection and dimensional check up is done after Proof Load Testing. Magnetic particle test is carried out on forged and machined components to ensure flawless components. Tensile tests and impact tests are performed on each batch of finished chain and accessories to comply with the requirement of the specifications. Testing is certified by Classification Societies as required by the Customer. |
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PAINTING AND PACKAGING Chains and accessories are generally coated with bitumin. If desired these can be supplied in electro zinc plated or Hot dip galvanised condition. Chains are bundled and tied with wire ropes and loose items packed in wooden boxes. |
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TESTING REQUIREMENTS |
Chain size (mm) | GRADE U1 | GRADE U2 | GRADE U3 | Weight of each lenght of 27.5 M with Kenter (Kg) | Proof Load | Breaking Load | Proof Load | Breaking Load | Proof Load | Breaking Load | 14 | 58 | 82 | 82 | 116 | 116 | 165 | 130 | 16 | 76 | 107 | 107 | 150 | 150 | 216 | 160 | 17.5 | 89 | 127 | 127 | 179 | 179 | 256 | 195 | 19 | 105 | 150 | 150 | 211 | 211 | 301 | 225 | 20.5 | 123 | 175 | 175 | 244 | 244 | 349 | 260 | 22 | 140 | 200 | 200 | 280 | 280 | 401 | 300 | 24 | 167 | 237 | 237 | 332 | 332 | 476 | 360 | 26 | 194 | 278 | 278 | 389 | 389 | 556 | 420 | 28 | 225 | 321 | 321 | 449 | 449 | 642 | 480 | 30 | 257 | 368 | 368 | 514 | 514 | 735 | 550 | 32 | 291 | 417 | 417 | 583 | 583 | 833 | 620 | 34 | 328 | 468 | 468 | 655 | 655 | 937 | 710 | 36 | 366 | 523 | 523 | 732 | 732 | 1050 | 800 | 38 | 406 | 581 | 581 | 812 | 812 | 1160 | 890 | 40 | 448 | 640 | 640 | 896 | 896 | 1280 | 980 | 42 | 492 | 703 | 703 | 981 | 981 | 1400 | 1080 | 44 | 538 | 769 | 769 | 1080 | 1080 | 1540 | 1170 | 46 | 585 | 837 | 837 | 1170 | 1170 | 1680 | 1280 | 48 | 635 | 908 | 908 | 1270 | 1270 | 1810 | 1380 | 50 | 686 | 981 | 981 | 1370 | 1370 | 1960 | 1480 | 52 | 739 | 1060 | 1060 | 1480 | 1480 | 2110 | 1600 | 54 | 794 | 1140 | 1140 | 1590 | 1590 | 2270 | 1720 | 56 | 851 | 1220 | 1220 | 1710 | 1710 | 2430 | 1865 | 58 | 909 | 1290 | 1290 | 1810 | 1810 | 2600 | 1990 | 60 | 969 | 1380 | 1380 | 1940 | 1940 | 2770 | 2120 | 62 | 1030 | 1470 | 1470 | 2060 | 2060 | 2940 | 2280 | 64 | 1100 | 1560 | 1560 | 2190 | 2190 | 3130 | 2440 | 66 | 1160 | 1660 | 1660 | 2320 | 2320 | 3310 | 2590 | 68 | 1230 | 1750 | 1750 | 2450 | 2450 | 3500 | 2750 | 70 | 1290 | 1840 | 1840 | 2580 | 2580 | 3690 | 2950 | |
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ANCHOR CHAIN ACCESSORIES |
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OPEN LINK CHAIN AND ANCHOR | END LINK |
Nominal dia (D) | Inside Length (P) | Inside Width (W) | Safe Working Load (kN) | Proof Load (kN) | Min. Breaking Load (kN) | Kg/M (approx) | Corresp. Shackle size | 20 | 80 | 31 | 50 | 100 | 200 | 7.8 | 25 | 25 | 100 | 40 | 80 | 160 | 320 | 12.1 | 35 | 32 | 128 | 51 | 130 | 260 | 520 | 19.9 | 42 | 36 | 144 | 58 | 170 | 340 | 680 | 25.1 | 42 | 38 | 152 | 61 | 190 | 380 | 760 | 29.5 | 46 | 42 | 168 | 67 | 230 | 460 | 920 | 36.0 | 46 | 44 | 176 | 70 | 250 | 500 | 1000 | 39.4 | 50 | 50 | 200 | 80 | 330 | 660 | 1320 | 50.5 | 57 | | Min. Breaking Load (kN) | Kg/M (approx) | Corresp. Shackle size | 24 | 96 | 38 | 30 | 120 | 48 | 34 | 136 | 54 | 38 | 152 | 61 | 43 | 172 | 69 | 48 | 192 | 77 | 53 | 212 | 85 | 60 | 240 | 96 | 67 | 268 | 107 | 76 | 304 | 122 | | |
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 | Size D | W | L | E | B | H | G | Weight each (kgs) | SWL (kN) | Proof Load (kN) | 25 | 74 | 190 | 57 | 25 | 35 | 159 | 3.3 | 50 | 100 | 35 | 79 | 243 | 82 | 38 | 49 | 189 | 7.3 | 80 | 160 | 42 | 86 | 276 | 93 | 43 | 56 | 210 | 11.8 | 170 | 340 | 46 | 100 | 311 | 105 | 49 | 63 | 238 | 15.8 | 230 | 460 | 50 | 113 | 346 | 118 | 54 | 70 | 257 | 22.2 | 250 | 500 | 57 | 123 | 370 | 133 | 57 | 79 | 292 | 29.6 | 330 | 660 | | |
| Dimensions in mm | Load in kN | |
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'D' TYPE JOINING SHACKLE | KENTER SHACKLE | Chain Size | D | P | E | G | L | Weight (kgs) | 14 | 18 | 22 | 20 | 39 | 99 | 1.0 | 16 | 21 | 26 | 22 | 45 | 114 | 1.5 | 17.5 | 23 | 28 | 24 | 49 | 124 | 2.0 | 19 | 25 | 30 | 26 | 53 | 135 | 2.2 | 20.5 | 27 | 33 | 28 | 57 | 146 | 2.3 | 22 | 29 | 35 | 30 | 61 | 156 | 2.8 | 24 | 31 | 38 | 34 | 67 | 170 | 3.8 | 26 | 34 | 42 | 36 | 73 | 185 | 4.5 | 28 | 36 | 45 | 40 | 78 | 199 | 5.5 | 30 | 39 | 48 | 42 | 84 | 213 | 6.8 | 32 | 42 | 51 | 44 | 90 | 227 | 8.0 | 34 | 44 | 54 | 48 | 95 | 241 | 11.1 | 36 | 47 | 58 | 50 | 101 | 256 | 11.7 | 38 | 49 | 62 | 54 | 106 | 271 | 13.2 | 40 | 52 | 64 | 56 | 112 | 284 | 17.0 | 42 | 55 | 68 | 58 | 118 | 300 | 19.0 | 44 | 57 | 70 | 62 | 123 | 312 | 23.0 | 46 | 60 | 74 | 64 | 129 | 327 | 24.4 | 48 | 62 | 77 | 68 | 134 | 341 | 27.0 | 50 | 65 | 80 | 70 | 140 | 355 | 31.0 | 52 | 68 | 83 | 74 | 146 | 369 | 35.0 | 54 | 70 | 86 | 76 | 151 | 383 | 44.0 | 56 | 73 | 90 | 78 | 157 | 398 | 44.0 | 58 | 75 | 93 | 82 | 162 | 412 | 45.0 | 60 | 78 | 96 | 84 | 168 | 426 | 52.0 | 62 | 81 | 99 | 86 | 174 | 440 | 61.0 | 64 | 83 | 102 | 90 | 180 | 454 | 66.0 | 66 | 86 | 106 | 92 | 185 | 469 | 71.0 | 68 | 88 | 109 | 96 | 190 | 483 | 78.9 | 70 | 91 | 112 | 98 | 196 | 497 | 84.5 | | Chain Size D | A | B | C | Weigth (kgs) | 14 | 84 | 59 | 21.3 | 0.5 | 16 | 96 | 67 | 24.3 | 0.6 | 17.5 | 105 | 74 | 27 | 0.8 | 19 | 114 | 80 | 29 | 1.1 | 20.5 | 123 | 86 | 31 | 1.2 | 22 | 132 | 92 | 33 | 1.8 | 24 | 144 | 101 | 36 | 2.5 | 26 | 156 | 109 | 40 | 2.9 | 28 | 168 | 118 | 43 | 3.8 | 30 | 180 | 126 | 46 | 4.7 | 32 | 192 | 134 | 49 | 5.0 | 34 | 204 | 143 | 52 | 6.6 | 36 | 216 | 151 | 55 | 7.2 | 38 | 228 | 160 | 58 | 8.3 | 40 | 240 | 168 | 61 | 9.7 | 42 | 252 | 176 | 64 | 10.4 | 44 | 264 | 185 | 67 | 13.0 | 46 | 276 | 193 | 70 | 14.9 | 48 | 288 | 202 | 73 | 15.5 | 50 | 300 | 210 | 76 | 18.0 | 52 | 312 | 218 | 79 | 22.0 | 54 | 324 | 227 | 82 | 24.2 | 56 | 336 | 235 | 85 | 24.7 | 58 | 348 | 244 | 88 | 27.0 | 60 | 360 | 252 | 91 | 33.4 | 62 | 372 | 260 | 94 | 36.7 | 64 | 384 | 269 | 97 | 40.0 | 66 | 396 | 277 | 100 | 44.0 | 68 | 408 | 286 | 103 | 48.3 | 70 | 420 | 294 | 106 | 50.0 | | | |
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'D' TYPE ANCHOR JOINING SHACKLE | SWIVEL ADAPTER | Chain Size | D | P | T | E | G | L | Weight (kgs) | 14 | 20 | 25 | 20 | 43 | 33 | 122 | 1.7 | 16 | 22 | 29 | 22 | 50 | 35 | 139 | 1.8 | 17.5 | 24.5 | 31 | 24.5 | 54 | 42 | 152 | 2.4 | 19 | 26.5 | 34 | 26.5 | 59 | 46 | 165 | 3.1 | 20.5 | 28.5 | 37 | 28.5 | 64 | 50 | 178 | 3.2 | 22 | 31 | 39 | 31 | 68 | 52 | 191 | 3.9 | 24 | 34 | 42 | 34 | 74 | 57 | 209 | 5.6 | 26 | 37 | 46 | 37 | 81 | 61 | 226 | 6.4 | 28 | 39 | 51 | 39 | 87 | 68 | 244 | 8.5 | 30 | 42 | 54 | 42 | 93 | 72 | 261 | 9.8 | 32 | 45 | 57 | 45 | 99 | 76 | 278 | 10.2 | 34 | 48 | 62 | 48 | 105 | 78 | 296 | 17.6 | 36 | 50 | 65 | 50 | 112 | 87 | 313 | 18.6 | 38 | 53 | 69 | 53 | 118 | 92 | 331 | 20.0 | 40 | 56 | 72 | 56 | 124 | 96 | 348 | 23.0 | 42 | 59 | 75 | 59 | 130 | 100 | 365 | 26.0 | 44 | 62 | 79 | 62 | 136 | 105 | 383 | 30.0 | 46 | 64 | 83 | 64 | 143 | 111 | 400 | 33.0 | 48 | 67 | 87 | 67 | 149 | 116 | 418 | 40.0 | 50 | 70 | 90 | 70 | 155 | 120 | 435 | 46.4 | 52 | 73 | 93 | 73 | 161 | 124 | 452 | 51.0 | 54 | 76 | 97 | 76 | 167 | 192 | 470 | 57.0 | 56 | 78 | 101 | 78 | 174 | 135 | 487 | 63.0 | 58 | 81 | 105 | 81 | 180 | 140 | 505 | 67.0 | 60 | 84 | 108 | 84 | 186 | 144 | 522 | 79.0 | 62 | 87 | 111 | 87 | 192 | 148 | 539 | 92.0 | 64 | 90 | 115 | 90 | 198 | 153 | 557 | 96.0 | 66 | 92 | 119 | 92 | 205 | 159 | 574 | 106.0 | 68 | 95 | 123 | 95 | 211 | 164 | 592 | 113.6 | 70 | 98 | 126 | 98 | 217 | 168 | 609 | 121.0 | | Chain Size | Length (L) | Weigth (kgs) | 14 | 364 | 2.8 | 16 | 416 | 4.0 | 17.5 | 455 | 5.4 | 19 | 494 | 6.4 | 20.5 | 533 | 7.8 | 22 | 572 | 9.8 | 24 | 624 | 12.8 | 26 | 676 | 16.0 | 28 | 728 | 21.0 | 30 | 780 | 24.9 | 32 | 832 | 30.0 | 34 | 884 | 36.0 | 36 | 936 | 43.0 | 38 | 988 | 50.7 | 40 | 1040 | 57.0 | 42 | 1092 | 68.0 | 44 | 1144 | 79.0 | 46 | 1196 | 89.0 | 48 | 1248 | 101.0 | 50 | 1300 | 115.0 | 52 | 1352 | 130.0 | 54 | 1404 | 147.0 | 56 | 1456 | 160.0 | 58 | 1508 | 181.0 | 60 | 1560 | 200.0 | 62 | 1612 | 220.0 | 64 | 1664 | 240.0 | 66 | 1716 | 265.0 | 68 | 1768 | 292.0 | 70 | 1820 | 318.0 | | | |