knuckle

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Knuckle

The knuckle is a key component of the coupler. When the couplers are interconnected, it is usually necessary to rotate or move the knuckle to achieve the locking and unlocking. The knuckle is generally made of casting. In recent years, due to the improvement of the manufacturing level, the knuckle made of forging has appeared, and the quality is much higher than the traditional casting knuckle.
Material:AAR M-201 Grade E/E+ TB/T 3212 Grade C/E
Standard:AAR M-211/205 TB/T 456


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