10~50KN hoisting iron pulley block, to erect pole and pylon ,line construction ,hoist devices ,etc. Hoisting iron pulley block Order numberModelNumber of sheavesRated ... ×35Φ9.37.7GH-·Uses: to erect pole and pylon ,line construction ,hoist devices ,etc.·Notes: you must explain clearly which ... style (H) or clevis (B). 10~50KN hoisting iron pulley block