Features 

McCalls Rebar Coupler is one of the latest rebar splicing method in the world, the parent rebars & male/female couplers are connected by automatic frictional-press machine and this connection is a kind of fusion bond which is well developed by automotive & aerospace industry over a decade. These frictional press connections had been brought the following advantages for the industry.

A. Reliable process

    Frictional press technology provides a strong toughness joint which far exceeds the strength of parent metals.

 

B. Consistency

Not only raw material of couplers, but also dedicated production process. McCalls rebar coupler provide a high quality joint with high strength, more accurate & consistent threads than can be achieved through the rebar threading required by other systems. Ensuring the quality of the workpiece (fusion connection) reduces machining allowances and reduces material and processing costs.

 

C. No requirement of Torque wrench

McCalls rebar couplers utilize high strength tapered threads. The best functional connection by easy installation & self-locking effect. To all tapered threads, it is important that the threads are fully engaged to be able to achieve full load capacity. This is no guarantee to use a torque wrench as the threads might be blocked by cement, dirt etc. Much torque cannot be assured that full thread engagement is happened. McCalls rebar couplers offer a reliable and easy quality control by simple visual inspection: No full thread outside the coupler joint = Full thread engagement.

 

D. Proven-effective manufacturing technique for the industry

Automated for high volume production & low labour force by one single process. Apart from other ductility threading process, extra pre-treatment process of pressing & cold forging will be required. Not only time- consuming process, but also dangerous process will be happened. Both of pre-treatment process may damage the hardness & brittleness surface of rebar. Especially the temp-core process Grade 500B rebar. The production rate of frictional press rebar couplers is 3-4 times higher than traditional process of pressing/forging + threading.

E. Eco-friendly and low carbon emission

No cutting & no lubricant for threading, clean working environment and no metal wastage to build a low-carbon society.

 

F. Other features - To solve the circularity problem of rebars for traditional threading method; ability to join dissimilar metals; most suitable to seismic application…etc