Zhongyuan Ship Machinery Manufacture (Group) Co., Ltd
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MIL-C-22521 Open Link Chain Coast Guard Buoy Chain Anchor Chain
Description
MIL-C-22521C U.S. open link coast guard buoy chain is used for positioning for buoy tank. It is manufactured in accordance with U.S. Coast Guard Specification Mil-C-22521C, the welded buoy chain is an open link, studless chain, manufactured to Grade 1.2,3. Both the chain and the end links are manufactured from C-Mn steel round bar, AISI 1030 per Mil-S-16974, with a tensile strength ranging from 71,000 to 92,500 pis.
We supply all kinds of buoy chain, They can be stud link and open link. They are butt flash welded. The surface is either painted or hot dip galvanized. It has good anti corrosive property and high strength.
Main Technical Specifications
Main Technical Parameters:
| Common Links | End Links | Loads | Weight Per 15-Fathom Shot (Approx.) | |||||||
| Chain Diameter A (Inches) | Chain Diameter A (mm) | Link Length B | Link Width C | Length Over Six Links D | Chain Diameter E | Link Length F | Link Width G | Proof Load | Break Load | |
| 1/2 | 13 | 3 | 1-7/8 | 13 | 3/4 | 4-1/4 | 2-5/8 | 7500 | 15000 | 210 |
| 5/8 | 16 | 3-3/4 | 2-1/4 | 16-1/4 | 3/4 | 4-1/2 | 2-5/8 | 11500 | 23000 | 323 |
| 3/4 | 19 | 4-1/2 | 2-5/8 | 19-1/2 | 7/8 | 5-1/4 | 3-1/8 | 16000 | 32000 | 442 |
| 7/8 | 22 | 5-1/4 | 3-1/8 | 22-3/4 | 1-1/8 | 6-3/4 | 3-7/8 | 22000 | 40000 | 608 |
| 1 | 25 | 6 | 3-1/2 | 28 | 1-1/4 | 7-1/2 | 4-3/8 | 29000 | 58000 | 760 |
| 1-1/8 | 28 | 6-3/4 | 3-7/8 | 29-1/4 | 1-1/4 | 7-1/2 | 4-3/8 | 38500 | 77000 | 990 |
| 1-1/4 | 32 | 7-1/2 | 4-3/8 | 32-1/2 | 1-1/2 | 9 | 5-1/4 | 45500 | 91000 | 1245 |
| 1-1/2 | 38 | 9 | 5-1/4 | 39 | 1-7/8 | 11-1/4 | 6-1/2 | 65500 | 131000 | 1762 |
| 1-5/8 | 42 | 9-3/4 | 5-11/16 | 42-1/4 | 1-7/8 | 11-1/4 | 6-1/2 | 76500 | 153000 | 2040 |
| 1-3/4 | 44 | 10-1/2 | 6-1/16 | 45-1/2 | 2-1/8 | 12 | 7-3/16 | 86500 | 173000 | 2370 |
| 1-7/8 | 48 | 11-1/4 | 6-1/2 | 48-3/4 | 2-1/8 | 12 | 7-3/16 | 100000 | 200000 | 2640 |
Drawing of MIL-C-22521 Open Link Chain Coast Guard Buoy Chain Anchor Chain