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● Series crown blocks conform to API Spec 4F and Spec 8A, and are granted the right to use API monogram.
● Conform to industry standard SY/T5527.
● Sheave grooves are heat quenched to provide good abrasion resistance and long service life.
● Rope bar and rope barrier are provided to prevent the wire rope from crossing or tailing out of the sheave grooves.
● Wooden buffer device is provided.
● Lifting frame for maintaining sheaves assembly are provided.
● Crown block sheave and traveling block sheaves are interchangeable. |