Specifications
(1):Conform to API 4F & 8A and marked with API monogram(2):Conform to industrial standard SY/T5527
Crown Blocks API 4F
Features
(1):Conform to API 4F & 8A and marked with API monogram
(2):Conform to industrial standard SY/T5527
(3):The sheave groove is quenching-treated,ant-abrasion and long of service life
(4):Equipped with wireline ward device,prevent the wireline bounce or fall off
(5):Equipped with bumping wood and protective net
(6):Equipped with gin pole for block servicing
(7):Equipped with sand block and auxiliary block
(8):The sheaves of crown block and mated traveling block are fully interchangeable
