Grade 70 Transport Chain

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: