The Classification of The Rebar Couplers


Rebar couplers are combinators to connect rebars, with internal threads to match the screw threads. It has 6 different types and can be deployed in these different ways.


1. Standard connection

Designed for situations that rotations are possible and limitless. By using a steel bar, meets at opposite side of the end force of the bridge piece. Standard and diameter-varied couplers are optional.


2. Lengthened connection

Designed for situations that rebars are too long and dense, rotations are limited. Couplers are fully screwed in the lengthened thread of a rebar in advance, then reverse screwed in the end thread of the rebar that is being connected. To lock the coupler, just twist the rebar for half to one turn. Standard couplersare optional.


3. Locknut-added connection

Designed for situations that rebars can't rotate, such as hooked rebars and dockings of bridges, place piles reinforcement cages. Lock the coupler by screwing the locks and rebars in the lengthend thread in advance, then screw in the thread of another rebar's end and lock the coupler with the locknut. Standard and flare couplers with locknuts are optional.


4. Double-sided thread connection

Designed for situations that rebars can't rotate but internal forces of the rebars are adjustable, such as construction joints and post cast strips. The coupler is equipped with double-sided threads, which is able to release and tighten two rebars in one direction.


Changsha DLADTO Rebar Splice Co., Ltd is a professional producer of rebar couplers. We are glad to help if needed, please feel free to contact us. Click here to know "the disassembly steps and installation inspection of rebar coupler".


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Tensile Strength Test of Rebar Coupler

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Rebar Coupler is designed to produce a full-strength mechanical joint between reinforcing bars. Today, I will share with you how to detect the tensile strength of the  rebar coupler . Let's get a close look. 1. Process Inspection Before and during the construction of the steel bar connection project, conduct a process inspection for each batch of incoming splices. There shall be no less than 3 splices of each type of steel bar during process inspection. The base material of the splice specimen shall be taken tensile strength test. 2. On-site Inspection The on-site inspection of splices shall be carried out according to the acceptance batch, and the joints of the same grade, type, and specification of the same batch of materials shall be adopted under the same construction conditions. An acceptance batch of 500 will be conducted for inspection. For each acceptance batch of splice, three specimens must be randomly selected from the engineering structure for unidirectional tensile tes
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Problems Encountered During Rebar Coupler Processing

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 Rebar coupler is also known as mechanical splices in the construction industry. The common specifications of the  rebar coupler  are M12, M14, M16, M18, M20, M22, M25, M28, M32, M36, and M40. The most commonly used specifications are M16, M18, M20, M22, M25, M28, and M32. These are the most used on the site, but also the most commonly used. Today, we will introduce to you how to solve the wrong diameter or length problems encountered in the processing of steel sleeves.  Causes:  1. The specifications of raw materials are not accurate, and the feeding speed is too slow. 2. Raw materials are bent and not straightened before processing. 3. The mechanical equipment malfunctioned, resulting in the diameter of the rebar coupler becoming smaller. 4. Operators do not process according to engineering drawings.   Solutions: 1. Adjust raw material specifications and models, and pre-feed appropriate amount. 2. Straighten the round bend steel before cutting the raw material. 3. Check the mechanica
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The differences between rebar coupler

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The advantages of the direct rolling straight threaded rebar couple r are: the thread processing is simple, the equipment investment is small, the disadvantage is that the thread accuracy is poor, and the false thread phenomenon exists. Due to the uneven thickness of the steel bars, large tolerances, and inconsistent thread diameters, the on-site construction is difficult, and the coupler and the thread head are inconsistent with the tightness, and some joints may be pulled off. Due to the change of the steel bar diameter and the influence of the transverse and longitudinal ribs, the service life of the rolling wheel is reduced, the additional cost of the joint is increased, and the vulnerable parts of the construction site are frequently replaced. Rolling ribs and rolling straight threaded reabar coupler: This kind of connection joint uses special extrusion equipment to pre-flatten the transverse and longitudinal ribs of the steel bars, and then roll the threads, the purpose is to red
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