Grade 70 Transport Chain
Product Description:
Grade 70 chain, or grade 70 transport chain, is manufactured in heat-treated carbon steel. Grade 70 chain is an improvement over high test chain and meets stringent Department of Transportation (DOT) regulations. Load ratings of grade 70 chain are approximately 20% higher than grade 43. Grade 70 chain is most popular in the cargo industry as trailer tie downs, and also used for logging, towing, and some others. It is noteworthy that the grade 70 chain should never be used for overhead lifting. The grade 70 transport chain generally features a gold chromate finish, which makes it easily identifiable and usually embossed with 7, 70, or 700.
Features of Grade 70 Transport Chain:
• General: not used for lifting;
• Materials: carbon steel;
• Finish: chromate, black painted and galvanized;
• Standard: ASTM & NACM;
• Application: trailer tie downs, logging, safety, oil rigging and,etc..
Drawing and Specifications of Grade 70 Transport Chain:
Nominal
Chain
Size
Material
Dia.
Working Load
Limit
(Max.)
Proof Test
Load
(Min.)
Minimum
Breaking
Force Load
Inside Length
(Max.)
Inside Width
(Min.)
in
mm
in
mm
lbs
kg
lbs
KN
lbs
KN
in
mm
in
mm
1/4
7.0
0.281
7.0
3.150
1.430
6300
28.0
12600
56.0
1.24
31.5
0.38
9.8
5/16
8.7
0.343
8.7
4700
2130
9400
41.8
18800
83.6
1.29
32.8
0.44
11.2
3/8
10.0
0.406
10.3
6600
2990
13200
58.7
26400
117.4
1.38
35.0
0.55
14.0
7/16
11.9
0.468
11.9
8750
3970
17500
77.8
35000
155.4
1.64
41.6
0.65
16.6
1/2
13.0
0.531
13.5
11300
5130
22600
100.4
45200
200.8
1.79
45.5
0.72
18.2
5/8
16.0
0.630
16.0
15800
7170
31600
140.4
63200
280.8
2.20
56.0
0.79
20.0
3/4
20.0
0.787
20.0
24700
11200
49400
219.6
98800
439.2
2.76
70.0
0.98
25.0
Photos of Grade 70 Transport Chain:
Yellow Chromate Grade 70 Transport Chain:
Black Painted Grade 70 Transport Chain:
Hot Dip Galvanized Grade 70 Transport Chain:
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