Preshcon Industries Pte. Ltd
57 Ubi Avenue 1
#03-10 Ubi Centre
+65 6478 1340
+65 6478 1341
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The Preshcon'IRONMAN' BMS threaded rebar couplers system originated in Korea and has been developed to its current world leading standard by the Boo won Corporation in Seoul. Building on Melvyn Precious’ 30 years of experience in design, testing and worldwide supply of reinforcing bar couplers, a partnership was formed between Preshcon and Boo Won which has successfully penetrated the global market from their base in the Asian Hub of Singapore.
Since 1999 more than 15 million parallel threaded rebar couplers have been supplied for almost every form of civil and commercial structure imaginable, from Olympic stadiums to mass rapid transit systems, the prestigious Singaporean deep tunnel sewage system and high rise buildings including the Burj Dubai.
Threaded Rebar Couplers
The 'IRONMAN' Patented threaded rebar coupler from Preshcon uses a combination of cold forming and cold thread rolling to maximize the thread area potential. This optimises the size and strength of the thread area to such an extent that the bar fails away from the coupled joint under tensile load – the coupler is stronger than the bar!
The Cold forming method is essentially simple – the shape of the end of the rebar to be threaded is modified via a round accurately predetermined sized steel die set. The forming load is minimal and applied transversely to the grain flow of the material, this in effect aligns the grain flow of the ribs and the core diameter.
The core diameter and ribs are formed to an accurate circular shape suitable to thread roll. For a standard thread suitable for the 32mm Type A rebar coupler this takes approximately 10 seconds.
Universally accepted as the norm in industries with the most grueling needs for high performance connections, thread rolling enhances the material strength, providing an extremely consistent and accurate thread form with added benefits in fatigue and stress reversal conditions.
'IRONMAN' Threaded Rebar Couplers
The 'IRONMAN' threaded rebar coupler system fixes in only 5 turns, half that of most other coupler systems, essential in projects that require large numbers of couplers and speed of construction.
Supplied with ISO standards and additionally UK CARES approvals, the 'IRONMAN' BMS rebar coupler system is higher performing, stronger and easier fixing than any other rebar coupler – “the system speaks for itself, why choose anyone else.”
We supply reinforcing bar couplers to suit every application and internationally renowned standard, including nuclear, seismic, fatigue and strain energy functions.
Used where the continuity bar can rotated final tightening is by wrench, spanner etc.
Used for P.S.C box at the top of the bridge: ILM, FCM, MSS method of construction, 2nd application, slip form construction, etc.
Used in application of large sized long bars ( for slip-form, column, post applied in the site ) where bars can be rotated but may be difficult to do so.
We Extend the bar thread at one side to allow the coupler to screw right on, flush with bar end. On assembly the bar ends are placed against each other and the coupler rotated on to the short thread to form the connection.
Turn the coupler onto the short thread to complete the assembly and tighten with a wrench or a spanner.
Used for construction of prefabricated cages of fixing hooked/cranked bars.
We extend the bar thread at one side to allow the lock nut and coupler to screw right on flush with the bar end.
To assemble, the bar ends are placed against each other and the coupler rotated onto the short thread to form the connection. Wrench tighten the coupler onto the short bar and rotate the lock nut against the coupler and wrench tight
Nominal Sizes Of IRONMAN BMS Rebar Couplers
Nominal Bar Size (
Coupler Diameter (mm)
Hexagon - B (mm)
Typical Test Results For IRONMAN BMS Rebar Couplers
"Typical Test Results - BS 8110
Hot Rolled Bars - BS 4449"