MRT Line 1

Developer: MRT Corporation Sdn Bhd
Main Contractor: MMC Gamuda
Products Supplied: Moment® JoinTec Coupler and Moment® Spearline Coupler

Project Description

The first line of the Klang Valley MRT Project is the MRT Sungai Buloh-Kajang (SBK) Line. The line begins from Sungai Buloh, located to the north-west of Kuala Lumpur and runs through the city centre of Malaysia’s capital city before ending in Kajang, a fast developing town to the south-east of the city. The 51km long-line required couplers and quality rebar threading to connect the reinforcement bars within the railway structure. Proof load for each coupler is also required to suffice the specified quality assurance requirement.

The Solution

Halfen Moment Malaysia has supplied 200,000 of Moment® JoinTec couplers and more than 100,000 Moment® Spearline couplers, together with our quality rebar threading services at our production plant. To fulfil the requirement of quality assurance, we have also managed to provide proof loading for each coupler with a strong local team. The purpose of proof loading to be performed on a rebar with coupler especially for bigger rebar size (>40mm dia) is to check the embrittlement of the threads and also helps to control the slip. It is our part of the quality control procedure developed to reassure good quality of threads before we supply it to MRT sites. After all, a good quality connection between rebars is not only determined by the quality of the coupler but equally by the quality of the threads.

The JoinTec coupler which is seismic and impact resistant, has a straight parallel thread to provide an absolute bar break system where the rebar remains the weakest point. It has the most comprehensive system which eased the various applications needed in MRT projects.

Whereas the Spearline coupler which is the slimmest profile of our coupler, provided a full strength system capable of exceeding the nominal ultimate characteristic strength of the connecting reinforcing bars.

The Result

Halfen Moment Malaysia has supplied to most of the MRT stations. The feedback has been extremely positive and we will be continuing to supply couplers to the Malaysia railway industry.

MRT Line 1 Railway Construction
Picture above showing Moment® JoinTec Coupler supplied for reinforcement bar within the railway in MRT SBK Line 1.


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August 7, 2017