Crown block--Main features:                                                           Specification (Click here)

(1)Built to conform to API 4F and 8A, with the certificate of authority to use the official API monogram.
(2)In conformity with the requirements of industry standard SY/T5527.
(3)The sheave groove has been quenched; it is anti-abrasive for long service life.
(4)Equipped with wireline guide device, preventing the wireline from being out or falling off.
(5)Equipped with anti-vibration wood and protection net.
(6)Equipped with gin pole for block servicing.
(7)Equipped with sand block and assistant block.
(8)The sheaves of crown block and mated traveling block are fully interchangeable.