Three-segments Long Reach Boomarm:PC120-6,PC200LC- ... narrow and restricted space, such as railway track repairsThree-piece long reach arm/boom is suitable for demolishing works ... two kinds of extension jibs: two-segment type and three-segment type. Two-segment type is mainly applied ... of expressways, and the dredging of watercourses, etc. Three-segment type is mainly applied in demolishing high-rises. ...