Anchor Chain

Anchor Chain

Introduction:

Anchor chain is used to connect anchors and ships. The common grade is U2 and U3. Usually, small diameter anchor chain with hot dip galvanized surface, the large diameter chain with black paint. We can offer a wide anchor chain diameter range from 12.5mm to 162mm. The common length of anchor chain is 27.5m, but we can customize the chain length based on your requirements. All our anchor chains comply with ISO1704 and GB/T549-2017 standard, qualified to pass the inspections of IACS.

Main Types of Anchor Chain:

Drawing of Shackle for Anchor Chain:

Difference Between Stud Link Anchor Chain and Studless (Open) Link Anchor Chain:

For more information, please click above pictures.

Joining Forms of Anchor Chain:

Main Produce Process of Anchor Chain:

Good Anchor Chain is Strictly Controlled in the Following Points:

1. The quality of the anchor chain round steel, the selected anchor chain round steel should be clearly marked on the end of the material with the trademark, the steel grade, the mark traceable to the original heat number, etc., Round steels used to produce the anchor chain and accessories need to be supplied by steel mills approved by CCS or other classification societies;

2. The heating degree of round steel, if the anchor chain round steel is not heated properly before the bending treatment carried out, which will easily damage the internal structural stability of the round steel, so that the anchor chain cannot reach the standard breaking load;

3. The heated round steel should be bent immediately;

4. Chain ring interface, after the chain ring is processed, the deviation at the interface must be within a certain range. If the deviation of the interface is too large, it will cause insufficient strength at the welding point, affecting the proof load and breaking load of the anchor chain;

5. Flash butt welding. The clamping device in the butt welding process should always clamp the bar to avoid the dislocation of the butt welding;

6. Deburring, deburring are strictly prohibited in the cooling state. The purpose of deburring is to remove welding slag, burrs, etc. on the surface of the chain ring. This step can avoid scratches between the chain rings and extend service life of anchor chain;

7. Stud setting, the chain stud should be made up of the same grade round steel to chain ring. Chain studs should be matched with the chain rings, no visible gaps, no burrs, no welding slag in the studs;

8. Stud welding. Stud welding shall be carried out on the other side of flash welding, and welding shall be carried out before the final heat treatment of the anchor chain;

9. Heat treatment, the anchor chain is heated to a certain temperature and kept for a period of time, which can improve the comprehensive mechanical properties of the anchor chain;

10. Shot blasting, this can remove the rust on the surface of the anchor chain, and the rough anchor chain surface after shot blasting makes the paint not easy to peel off;

11. Testing, anchor chains that require a IACS certificate must undergo tensile and breaking tests.