博文

目前显示的是 十月, 2024的博文

Rebar Coupler Inspection Tool: Thread Ring Gauge

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The   thread ring gauge   is a tool used to measure the accuracy of external thread dimensions. There are two types of thread angle options available for the gauge, which are 75 degrees and 60 degrees, depending on the couplers used at construction. Please make sure to specify the thread angle and pitch you need before purchasing. The thread ring gauge is used to inspect whether the external thread dimensions of the workpiece are qualified. Each specification of the thread ring gauge is divided into two types: Go gauge and No-go gauge, which can be purchased separately or together. During the inspection process, only when the Go gauge can fully engage with the external thread of the workpiece, and the No-go gauge can only partially engage with the external thread and the engagement does not exceed two pitches, can the external thread be determined as qualified. Otherwise, it can be judged that the external thread dimensions are not qualified. The thread ring gauge is used to ...

What should I do if the Cold Extrusion Sleeve is Cracked

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If you encounter a cracked   cold extrusion sleeve , there are a few steps you can take to address the issue: Inspect the extent of the crack: Determine the size and location of the crack to assess the severity of the damage. This will help you plan the appropriate course of action. Replace the damaged sleeve: If the crack is significant and compromises the functionality of the sleeve, it is recommended to replace it entirely. Consult the manufacturer’s guidelines or seek professional assistance to ensure you select the correct replacement sleeve. Weld the crack: In some cases, if the crack is small and doesn’t affect the overall performance, it may be possible to repair it through welding. However, welding should only be done by experienced professionals to ensure the integrity of the sleeve is maintained. Prevent future cracks: To avoid encountering similar issues in the future, it is important to identify the cause of the crack. Factors such as excessive pressure, improper handl...

Performance Requirements of Grouting Rebar Coupler

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Performance requirements of   grouting rebar coupler   are as follows: 1. Vertical rebar connections at the joints of prefabricated columns and prefabricated shear walls. Semi-grouting rebar coupler or fully grouted rebar coupler can be used. 2. Vertical rebar connections at the joints after pouring the lower part of the prefabricated overlay beam. Fully grouted rebar coupler should be used. Since the rebar couplers of prefabricated components must be arranged at the same section, it is clearly stipulated in the “Technical Specification for Assembled Concrete Structures” JGJ1-2014 that the longitudinal rebar connections using sleeve grouting should meet the performance requirements of Grade I joints in the current national industry standard “Technical Specification for Mechanical Connections of Reinforcement Bars” JGJ107. Whether the joints meet the performance requirements of Grade I joints is determined by the joint type test specified in JGJ107. The content includes three t...