1. Standard connection: the possible free rotation of the application. Use iron rods to reason mutually opposite the endpoint force of the lock bridge piece. Willing to choose standard sleeve or reducer type connecting sleeve.
2. Lengthened connection: It is used for occasions where the steel bars are too long and dense, and it is inconvenient to rotate. The connecting sleeve is all screwed into the extended thread of a steel bar in advance, and then screwed into the end thread of the connected steel bar, and the connecting piece can be locked by turning the steel bar half to one turn, and a standard connecting sleeve can be used.
3. Locking female connection: It is used for the connection of steel bars that cannot be rotated at all, such as the connection of bent steel bars, bridges, cast-in-place piles and other steel cages. Screw the lock nut and the connecting sleeve into the extended thread in advance, then screw in another steel bar end thread, and use the lock nut to lock the connecting sleeve. Standard or flared connection sleeves and lock nuts are available.
4. Positive and negative screw type connection: It is used for occasions where the steel bar cannot be rotated at all and the internal force of the steel bar is required to be adjusted, such as construction joints, post-cast belts, etc. The connecting sleeve has positive and negative screws, which can loosen or tighten two steel bars in one direction of rotation. The connecting sleeve with positive and negative screws should be used first.
