Offshore Mooring Chafe Chain & Accessories--Stud & Studless Chain
Diameter up to 187mm:Grade R3/R3s/R4/R4s/R5/R6
1. Material receipt inspection
2. Cutting
3. Bar heating
4. Bending
5. Welding
6. Trimming
7. Shaping
8. Shot blasting
9. Pre-Inspection
10. Heat Treatment
11. Proof load and dimension check
12. Stud expansion
13. Shot blasting
14. Final NDT
15. Marking
16. Packing
17. Final inspection and ready for dispatch
|
Grade |
Yield Stress |
Tensile Strength |
Elongation |
Reduction of area |
Charpy V-Notch |
||||
|
Re |
Rm |
A5 |
Z |
Temperature |
Base |
Weld |
|||
|
Average energy |
Single energy |
Average energy |
Single energy |
||||||
|
|
N/mm2 |
N/mm2 |
% |
% |
℃
|
J |
J |
J |
J |
|
R3 |
410 |
690 |
17 |
50 |
0 |
60 |
45 |
50 |
38 |
|
-20 |
40 |
30 |
30 |
23 |
|||||
|
R3S |
490 |
770 |
15 |
50 |
0 |
65 |
49 |
53 |
40 |
|
-20 |
45 |
34 |
33 |
25 |
|||||
|
R4 |
580 |
860 |
12 |
50 |
-20 |
50 |
38 |
36 |
27 |
|
R4S |
700 |
960 |
12 |
50 |
-20 |
56 |
42 |
40 |
30 |
|
R5 |
760 |
1000 |
12 |
50 |
-20 |
58 |
44 |
42 |
32 |
|
R6 |
900 |
1100 |
12 |
50 |
-20 |
60 |
46 |
44 |
34 |
1. For grade R3 and R3S, testing may be carried out at either 0℃ or -20℃ .
2. For cast accessories, the minimum value shall be 40%.
3. For cast accessories, the minimum value shall be 35%.
4. For guidance only: Typical yield to tensile strength ration is in the range of 0.85 to 0.95. Tensile strength is normally not to exceed the minimum tensile strength with more than 150 MPa.
|
Diameter(mm) R3 grade |
Proof Load(KN) STUDLESS/STUD |
Break Load(KN) STUDLESS/STUD |
|
|
BV/CCS/LR/ABS |
DNV |
ABS/DNV/CCS/BV/LR |
|
|
34 |
706 |
744 |
1064 |
|
36 |
788 |
831 |
1188 |
|
38 |
875 |
922 |
1318 |
|
40 |
966 |
1018 |
1455 |
|
42 |
1060 |
1118 |
1598 |
|
44 |
1159 |
1222 |
1747 |
|
46 |
1262 |
1330 |
1902 |
|
48 |
1369 |
1443 |
2063 |
|
50 |
1480 |
1560 |
2230 |
|
52 |
1594 |
1680 |
2402 |
|
54 |
1712 |
1805 |
2580 |
|
56 |
1834 |
1933 |
2763 |
|
58 |
1959 |
2065 |
2952 |
|
60 |
2088 |
2201 |
3146 |
|
62 |
2221 |
2341 |
3346 |
|
64 |
2356 |
2484 |
3551 |
|
66 |
2496 |
2631 |
3761 |
|
68 |
2638 |
2781 |
3976 |
|
70 |
2784 |
2935 |
4195 |
|
73 |
3009 |
3172 |
4534 |
|
76 |
3241 |
3416 |
4884 |
|
78 |
3400 |
3583 |
5123 |
|
81 |
3643 |
3840 |
5489 |
|
84 |
3893 |
4103 |
5865 |
|
87 |
4149 |
4373 |
6251 |
|
90 |
4411 |
4650 |
6647 |
|
92 |
4589 |
4837 |
6915 |
|
95 |
4861 |
5124 |
7325 |
|
97 |
5046 |
5319 |
7603 |
|
100 |
5328 |
5616 |
8028 |
|
102 |
5518 |
5816 |
8315 |
|
105 |
5808 |
6122 |
8752 |
|
107 |
6005 |
6329 |
9048 |
|
111 |
6404 |
6750 |
9649 |
|
114 |
6708 |
7071 |
10108 |
|
117 |
7017 |
7397 |
10574 |
|
120 |
7331 |
7727 |
11046 |
|
122 |
7542 |
7950 |
11364 |
|
124 |
7755 |
8174 |
11685 |
|
127 |
8077 |
8514 |
12171 |
|
130 |
8404 |
8858 |
12662 |
|
132 |
8623 |
9089 |
12993 |
|
137 |
9177 |
9673 |
13828 |
|
142 |
9740 |
10267 |
14676 |
|
147 |
10310 |
10868 |
15535 |
|
152 |
10887 |
11475 |
16404 |
|
157 |
11469 |
12089 |
17281 |
|
162 |
12056 |
12707 |
18165 |
|
167 |
12646 |
13330 |
19055 |
|
172 |
13240 |
13956 |
19950 |
|
177 |
13835 |
14583 |
20847 |
|
182 |
14432 |
15212 |
21746 |
|
187 |
15029 |
15841 |
22645 |
More test parameter for grade R3S, R4, R4S, R5, R6 available upon on your request.
Class certificateABS/DNV/CCS/BV/LR are available for all grade chafe chain.
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