Parallel Threaded Coupler
Upset Forging Parallel Threaded Coupler
It is a parallel threaded system for reinforcing bars 12mm to 50mm diameter. It is fully capable of producing full strength joint in the rebar connection. Threads are ISO-metric with 60° angle to provide sufficient strength to the joint.
Couplers are produced from EN8D grade steel with tensile strength of 600 MPa.
Upset Forging Parallel Threaded Coupler
It is a parallel threaded system for reinforcing bars 12mm to 50mm diameter. It is fully capable of producing full strength joint in the rebar connection. Threads are ISO-metric with 60° angle to provide sufficient strength to the joint.
Couplers are produced from EN8D grade steel with tensile strength of 600 MPa.
Bar-End Preparation Process
First, the ends of the reinforcing bars are cut on a saw machine to achieve an end-to-end flat surface. This sawn end is then enlarged by cold forging process. This increases the core diameter of the bar to ensure that the joint is stronger than the bar, & makes it suitable for threading. Parallel standard ISO metric threads are then cut onto the enlarged ends that match the threaded coupler. Parallel threads reduce the risk of cross-threading and the risk of mismatch. Finally mechanically splice the rebar with parallel threaded couplers. Generally, a nominal allowance should be made per threaded bar end for the length consumed in cutting and cold forging, by adding extra length to the required length of the bar.
01
OPERATION : 1
Make parallel face of bar by cutting in saw machine
02
OPERATION : 2
The sawn cut end of the reinforcing bar is enlarged by cold forging process, thus increasing its diameter.
03
OPERATION : 3
Standard ISO metric threads are then cut onto the enlarged end & covered by plastic caps to protect the thread of rebar.
04
OPERATION : 4
Finally splice the rebar by using threaded rebar couplers.
Size Chart
| SIZE | OD | ID | PITCH | LENGTH |
|---|---|---|---|---|
|
16 MM |
25 |
17.5 |
M20X2.5 |
32 |
|
20MM |
32 |
21.5 |
M24X2.5 |
40 |
|
25 MM |
40 |
26 |
M29X3.0 |
50 |
|
32 MM |
50 |
33 |
M36X3.0 |
60
|
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