API Crown Block
Specifications
API Crown BlockAPI Spec 4F and Spec 8A
industry standard SY/T5527
API Crown Block
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 hardened 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 is provided.
Lifting frame for maintaining sheaves Assy is provided.
Sand sheaves and auxiliary sheaves Assy are provided.
Crown block sheaves are interchangeable with its matched traveling block sheaves.
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