Grade 70 Transport Chain

Grade 70 Transport Chain

Grade 70 transport chain is a kind of welded carbon steel link chain. The chain is an improvement over high test chain. Load ratings of grade 70 chain are approximately 20% higher than grade 43. Grade 70 transport chain meets ASTM and NACM standards. The chain is most popular in the cargo industry as trailer tie downs, however the chain is not used for overhead lifting purposes.

The grade 70 transport chain generally features a gold chromate finish, which makes it easily identifiable. Besides, it is usually embossed with 7, 70, or 700.

In addition to grade 70 transport chain, grade 43 high test chain, grade 30 proof coil chain, grade 80 alloy chain, and grade 100 alloy chain are all available.

Please call our sales team at +86-23-67868920 or send email to let us know what are you looking for, we’ll be happy to help.

Features of Grade 70 Transport Chain

• General: not used for lifting

• Materials: carbon steel

• Surface: chromate finish，black painted, galvanized

• Standard: to meet ASTM and NACM requirements

• Application: trailer tie downs, logging, safety, oil rigging...

Specifications of Grade 70 Transport Chain (ASTM Standard in 1980)

Trade Size	Material Diameter		Working Load Limit		Proof Test		Breaking Force Minimum		Max Length 100 Links		Max Weight per 100 Feet
Trade Size	in	mm	lbs	kg	lbs	kN	lbs	kN	in	m	lbs	kg
1/4	0.281	7.1	3150	1430	6300	28.0	12600	56.1	98	2.49	84	38
5/16	0.343	8.7	4700	2130	9400	41.8	18800	83.6	110	2.79	120	54
3/8	0.406	10.3	6600	3000	13200	58.7	26400	117.4	134	3.40	176	80
1/2	0.531	13.5	11300	5130	22600	100.5	45200	201.1	160	4.06	300	136

Specifications of Grade 70 Transport Chain (NACM Standard in 1980)

Trade Size		Material Diameter		Working Load Limit		Proof Test		Breaking Force Minimum		Inside Length (Max)		Inside Width (Min)
mm	in	mm	in	kg	lbs	kN	lbs	kN	lbs	mm	in	mm	in
7.0	1/4	7.0	0.276	1430	3150	27.0	6100	53.9	12100	31.5	1.24	9.8	0.38
8.7	5/16	8.7	0.343	2130	4700	41.6	9400	83.5	18800	33.5	1.32	12.2	0.48
10.0	3/8	10.0	0.394	2990	6600	55.0	12400	110.0	24700	35.0	1.38	14.0	0.55
11.9	7/16	11.9	0.468	3970	8750	77.7	17500	155.4	35000	41.6	1.64	16.6	0.65
13.0	1/2	13.0	0.512	5130	11300	92.9	20900	185.8	41800	45.5	1.79	18.2	0.72
16.0	5/8	16.0	0.630	7170	15800	140.4	31600	280.8	63200	56.0	2.20	20.0	0.79
20.0	3/4	20.0	0.787	11200	24700	219.6	49500	439.8	98900	70.0	2.76	25.0	0.98

Specifications of Grade 70 Transport Chain (NACM Standard in 1996/2003)

Trade Size		Material Diameter		Working Load Limit		Proof Test		Breaking Force Minimum		Inside Length (Max)		Inside Width (Min)
mm	in	mm	in	kg	lbs	kN	lbs	kN	lbs	mm	in	mm	in
7.0	1/4	7.0	0.281	1430	3150	28.0	6300	56.0	12600	31.8	1.24	9.8	0.38
8.7	5/16	8.7	0.343	2130	4700	41.8	9400	83.6	18800	32.8	1.29	11.2	0.44
11.9	3/8	11.3	0.406	2990	6600	58.7	13200	117.4	26400	35.0	1.38	14.0	0.55
13.0	1/2	13.5	0.531	5130	11300	100.4	22600	200.8	45200	45.5	1.79	18.2	0.72
16.0	5/8	16.0	0.630	7170	15800	140.4	31600	280.8	63200	56.0	2.20	20.0	0.79
20.0	3/4	20.0	0.787	11200	24700	219.6	49400	439.2	98800	70.0	2.76	25.0	0.98

Pictures of Grade 70 Transport Chain