Original
By certification 
Working Process:
1. Receive the purchase order
2. Product requirement
3. Buy raw material
4. Inspect raw material
5. Store raw material
6. Wire rod drawing
7. Bending
8. Trimming and Welding
9. Check surface
10. Sampling and breaking test
11. Calibration
12. Heat treatment
13. Proof load test
14. Black oxide or galvanized
15. Sampling and breaking test
16. Cutting
17. Final inspection
18. Packing
19. After-sale service
If you are interested in our chains, please feel free to contact us, I am glad to make best offer or provide samples free to charge.
FEC Round Steel Link Chain:
Nominal diameter Dn |
Pitch t |
Inside width |
Outside width |
Length of 11 x t |
Weight |
4±0.2 |
12 (+0.23) |
5 |
14 |
132 (+0.63) |
0.35 |
5±0.2 |
15 (+0.29) |
6.3 |
18 |
165 (+0.78) |
0.54 |
5.6±0.2 |
17 (+0.33) |
7 |
20 |
187 (+0.89) |
0.68 |
6.3±0.3 |
19 (+0.37) |
7.9 |
22 |
209 (+0.99) |
0.87 |
7.1±0.3 |
21 (+0.41) |
8.9 |
25 |
231 (+1.10) |
1.08 |
8±0.3 |
24 (+0.46) |
10 |
28 |
264 (+1.26) |
1.4 |
9±0.4 |
27 (+0.52) |
11.3 |
32 |
297 (+1.41) |
1.8 |
10±0.4 |
30 (+0.58) |
12.5 |
35 |
330 (+1.57) |
2.2 |
11.2±0.4 |
34 (+0.65) |
14 |
39 |
374 (+1.78) |
2.65 |
12.5±0.5 |
38 (+0.73) |
15.7 |
44 |
418 (+1.99) |
3.3 |
http://www.bstlschain.com/
