1. A special tool for tightening or loosening screws. It is composed of several inner hexagonal sleeves and one or more upper sleeve handles. The inner hexagons of the sleeve are arranged in sequence according to the bolt type and can be selected according to needs. A water supply pipe connection fitting, which can be used for the connection of steel pipes and cast iron pipes...2. Rebar connection sleeve, a special product used for mechanical connection of rebar. It is divided into cold extrusion sleeve, tapered thread sleeve and straight Threaded sleeve

The technical characteristics of the tube: 1. It is suitable for concrete connection construction of steel bars in various structures that bear the two-way force of tension and compression. 2. Material saving and energy saving are not restricted by the composition and type of steel bars. 3. It can be connected in all directions. 4. Can be prefabricated in advance, factory operation, no construction period, all-weather construction. 5. The operation is convenient and fast, and the construction speed is fast, which can greatly shorten the construction period. Technical characteristics of the steel bar connecting sleeve. The joint strength meets the industry standard JGJ107-96 grade A joint performance requirements. The thread profile is good, the precision is high, and the connection quality is stable and reliable. Wide application range, suitable for diameter 16-40mm. Ⅱ and Ⅲ grade steel bars are connected with different diameters in any direction and position. Adjustable type: Positive and negative threaded sleeves are suitable for the connection of steel bars at places that cannot be rotated, such as turning iron steel cages. Fast construction speed: thread processing is prefabricated in advance and on-site processing, assembly construction. Energy saving, no pollution, safe and reliable construction