Hatch Cover Chains
Hatch cover chains are often used for rolling type hatch covers. The regular materials of hatch cover chains are 20Mn2 and 20MnV. The surface treatment is coating anti-rust oil after tumbling or hot galvanized. The chains also can be black painted. The most common dimension of hot-dip galvanized hatch cover chains is 11*43*12.5mm. In addition to the common dimension, we are able to supply other dimensions. It is available to customize chains according to your requirements. If you are interested in our products, welcome to contact us.
Profile of Hatch Cover Chains
Chemical Composition of 20Mn2 and 20MnV
|
Steel grade |
Chemical Composition % |
|||
|
C |
Si |
Mn |
V |
|
|
20Mn2 |
0.17~0.24 |
0.17~0.37 |
1.40~1.80 |
– |
|
20MnV |
0.17~0.24 |
0.17~0.37 |
1.30~1.60 |
0.07~0.12 |
Regular Dimensions of Hatch Cover Chains
|
Chain Diameter mm |
Inside Length mm |
Inside Width mm |
Testing Load kn |
Breaking Load kn |
Nominal Weight kg/m |
|
11 |
43 |
12.5 |
57 |
116 |
2.39 |
|
14(A) |
50 |
17 |
97 |
194 |
3.95 |
|
14(B) |
42 |
18 |
97 |
194 |
4.32 |
|
15 |
42 |
21 |
106 |
212 |
5.20 |
|
16(A) |
48 |
22 |
128 |
254 |
5.34 |
|
16(B) |
55 |
18 |
128 |
254 |
5.29 |
|
18(A) |
54 |
24 |
161 |
322 |
7.12 |
|
18(B) |
64 |
25 |
161 |
322 |
6.32 |
|
19 |
57 |
24 |
164 |
330 |
7.60 |
|
20(A) |
60 |
22 |
129 |
359 |
9.50 |
|
20(B) |
62 |
22 |
179 |
359 |
8.57 |
|
22(A) |
78 |
31 |
240 |
480 |
9.86 |
|
22(B) |
86 |
30 |
240 |
480 |
9.24 |
|
22(C) |
66 |
31 |
240 |
480 |
10.6 |
|
30 |
108 |
35 |
399 |
798 |
18.22 |
|
Note |
If you have any specific requirements, please contact us. |
||||
