Changsha DLADTO Rebar Splice Co., Ltd

In the construction process of steel bar connection, it is often encountered the problem that the steel bar   connection sleeve   cannot be screwed on the wire head. Here let us talk about the reasons for why the threaded steel sleeve cannot be tightened. 1. The pitch in the steel bar connection sleeve is different from the wire head. Φ16, Φ18, Φ20, Φ22 the pitch of the steel bar connecting sleeve is 2.5mm, Φ25, Φ28, Φ32, Φ36, the pitch of the steel bar connecting sleeve is 3.0mm. The pitches of Φ40 steel sleeves are 3.0mm and 3.5mm. 2. The tooth angle of the steel rebar coupler is different from the steel wire head. There are two types of rebar coupler, 75° and 60° tooth angle, which are commonly used in the market. Some companies produce sleeves with a tooth angle of 70°. 3. The wire head cover is over large. Due to the insufficient adjustment accuracy of the rolling mill during the threading process, the wire head sleeve is too large, or the gear plate of the steel bar rolling machi

The   reducing-diameter steel connecting sleeve   is used for special engineering. One end of the sleeve is a screw thread connecting thick steel bars and the other end is a screw thread connecting thin steel bars. A steel connection sleeve with a diameter of 28 to 25 is required. Features of reducing diameter steel connecting sleeve: 1. The diameter-reducing steel connecting sleeve can reduce the materials and is easy to operate, also they are not limited by the types of steel components. 2. The steel connecting sleeve can be prefabricated in advance, which does not occupy the construction period and has high processing efficiency. 3. The connection is convenient, fast and simple, can construct in all weather. 4. It can connect horizontal, vertical and oblique HRB335 and HRB400 steel bars of the same diameter or different diameter.

  1. High connection strength, stable and reliable connection quality. The joint strength meets the industry standard JGJ107-2003. The tensile strength should not be less than 1.10 times of the actual tensile strength of the connected steel bar or the standard value of the tensile strength of the steel bar. 2. Good fatigue resistance. The joints pass the two million fatigue strength tests specified by the industry standard. ​ 3. Material saving. Take the steel connecting coupler with a diameter of 40mm as an example, the mass of the extruded sleeve is 4kg, and the straight thread sleeve is 1.1kg. The quality of the  straight thread rebar coupler  is 25% of the extruded rebar coupler, and the joint performance is the same as extruded joint. 4. Convenient to connection. The processing of steel wire head is factory-like and don't need lot construction time. On-site connection and assembly operations take a short time. 5. The steel wire head is easy to process. The two processes of rib

  The ends of the steel bars must not be bent, and should be straightened when bent. When cutting the steel bar, it is not allowed to use electric welding, gas welding and other heating methods or cutting with a steel bar cutting machine. It must be cut with a toothless saw to ensure that the end of the steel bar is straight and perpendicular to the axis of the steel bar, and there must be no horseshoe or bending. Rebar wire head processing: The processing length of the wire head is 1/2 of the length of the standard coupler. The specifications of the steel bar should be adjusted to the thread rolling device. Consistently, the cumulative length of the bald teeth in the effective thread segment is less than the circumference of one thread. On the straight thread rolling machine, the straight thread head of the steel bar is rolled according to the designed pitch, feed length and other parameters, and the corresponding ring gauge is used. And the wire head clamp test is qualified. Refer to

 Features of  rebar coupler : 1. Using international No. 45 steel, after special manufacturing process, it has high dimensional accuracy and reliable quality. 2. It can connect HRB335 and HRB400 ribbed steel bars of Ф16-Ф40mm. 3. After construction quality supervision, inspection and testing, it has reached the I-level joint standard in JGJ107-2010. 4. There are three series: standard type, positive and negative screw type, and different diameter type. Which can meet the requirements of connecting steel bars of the same diameter, different diameter and adjustable length and direction in the horizontal, vertical and oblique parts of the building structure. Changsha DLADTO Rebar Splice Co., Ltd   is a professional rebar coupler producer, we have been in this field for a long time with customers for all over the world.  We are glad to help if needed, please feel free to contact us.   Click here to visit our official product site.