Changsha DLADTO Rebar Splice Co., Ltd

How to make the template for   rebar coupler   connection? Procedure standard: 1. Rebar cutting should be done with a non-toothed saw for a straight and even end section. 2. The rebar coupler should be qualified, with well-shaped threads and no defects such as broken or bald threads. After the thread processing is completed, fitted with a protective cover. 3. The coupler be installed by a torque wrench to ensure the tightening torque value meets the specifications. 4. Each connection should be inspected individually and marked with paint if it passes the inspection. Quality standard: 1. The end of the rebar should be perpendicular to the axis and should not have a horseshoe or curved shape. 2. The tightening torque value of the torque wrench should meet the specifications or design requirements, with an accuracy of ±15% for the torque wrench. 3. After the connection, there should not be more than one full thread exposed on each end. 4. The ribs of two interconnected rebars should be in

Weldable rebar coupler  can be fixed on steel structures through welding at one end for connecting reinforcement bars and steel plates; ordinary sleeves are used for connecting reinforcement bars. Weldable rebar coupler are used for connecting reinforcement bars between rigid steel columns. The difference between weldable rebar couplers and ordinary rebar coupler is the 45-degree chamfering process of the weldable rebar couplers, which is not present in the ordinary rebar coupler. Additionally, the lengths of weldable couplers vary, and technical parameters such as length, pitch, and thread angle depend on the needs of the construction.  Welding characteristics of weldable rebar couplers 1. Reliable connection quality and fast construction speed; 2. Welding joint quality meets the higher level requirements of Grade I joint performance in the industry standard “General Technical Specification for Mechanical Connection of Reinforcement Bars”

In cold extrusion forming, the cracking of the   sleeve   is caused by transverse tearing. It can be avoided by the following methods: 1. Reduce friction to decrease the additional tensile stress on the metal surface. This can be achieved by improving extrusion lubrication conditions or using smoother die surfaces. 2. Control the extrusion temperature to prevent excessive temperature from reducing the tensile strength of the metal surface. This can be achieved by selecting appropriate extrusion temperatures or improving the cooling system. 3. Control the extrusion speed to avoid excessive additional tensile stress on the metal surface. This can be achieved by adjusting the operating parameters of the extrusion machine or using more suitable extrusion speeds. In summary, in order to prevent cracking during cold extrusion forming, it is important to strictly control process parameters and take appropriate measures to reduce friction, control extrusion temperature and speed. This can effe

Attention points for purchasing   rebar coupler : 1. Random sampling for testing should be conducted. 5% of each batch should be tested, and the acceptance rate should be higher than 95%. If the qualification rate is lower than 95%, a second sampling should be carried out with the same number of new samples. After two rounds of testing, if the average qualification rate is still above 95%, then the batch of sleeves is considered qualified. If it is still below 95%, each sleeve in that batch should be individually tested. 2. The manufacturer of the rebar coupler should have a certificate of conformity and material specification. 3. The couplers should be tested for their ability to be screwed in. 4. Both ends of the couplers should have plastic protective caps. 5. The plastic protective caps should be marked with the same specifications as the rebar coupler.

Generally, the connection of reinforcing cages in road and bridge pile foundations is use   threaded rebar couplers   and   upsetting forged rebar coupler . When using threaded rebar couplers, one end of the steel bar needs to be processed into a threaded end that is longer than the coupler length. The coupler and lock nut are then screwed onto the extended threads. After aligning two reinforcing cages, the coupler is rotated downward to connect the two cages. The advantage of this connection method is that it is easy to construct, but the disadvantage is that there are exposed threaded ends. Another connection method is using upsetting forged rebar coupler. In this method, the end of the steel bar is first enlarged using a steel bar enlarging machine and then threaded using a steel bar threading machine. This method requires a larger investment and much labor, but provides a better connection effect.

The raw material of the   steel reinforcing bar coupler   is 45# carbon structural steel. It is determines that if the steel reinforcing bar scoupler comes into contact with water, it will rust within a few minutes. However, rusted steel reinforcing bar couplers will seriously affect the quality of the project. Therefore, preventing rust in steel reinforcing bar couplers is an important process in the production of steel reinforcing bar couplers. There are five main reasons for the rusting of steel reinforcing bar couplers: 1. Poor quality of cutting fluid During the process in the production of steel reinforcing bar couplers, cutting fluid is used. The fluid is a water-soluble oil with certain rust removal and rust prevention functions. If the quality of the cutting fluid is poor and the concentration is low, the steel reinforcing bar sleeves should not be stored for a long time, as they are prone to rust. 2. Poor quality of packaging bags The packaging bag for steel reinforcing coupl