1Generally speaking, there are three types of shackles: national standard shackles, American standard shackles and Japanese standard shackles. Among them, the American standard high-strength bow shackle is the most commonly sold one. Its safety factor is as high as 4 times, 5 times, 6 times, or even 8 times. It can be widely used in power, railways, ports, oil and other fields. It has high strength, safety and durability. First of all, the American standard shackle is smaller in size and lighter in weight than the national standard shackle, making it safer to use. Secondly, the American standard shackle is made of 40Cr material, the Chinese American standard shackle is made of 45# steel, and the national standard shackle is also made of 45# steel.In addition, the American standard shackles have 21 specifications, including 0.5 tons, 1 ton, 1.5 tons, 2 tons, 3.25 tons, 4.75 tons, 6.5 tons, 8.5 tons, 9.5 tons, 12 tons, 13.5 tons, 17 tons, 25 tons, 35 tons, 55 tons, 85 tons, 120 tons, 150 tons, 200 tons, 300 1tons, and 500 tons, and 209, 210, 2130, and 2150. The national standard shackles have 16 specifications, including 3 tons, 5 tons, 8 tons, 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 40 tons, 50 tons, 60 tons, 80 tons, 100 tons, 120 tons, 150 tons, and 200 tons.
Audited Supplier 
){kind=link}