MBT Rebar Coupler

A mechanical connection system for non-rotatable and non-movable reinforcing bars, providing a practical solution for challenging rebar splicing applications.

  • Allow to operate on embedded reinforcing bars to solve the problem of insufficient length for reinforcement lapping
  • A remedy for rebar coupler or reinforcing bar being damaged
  • Fit into not only non-rotatable but non-movable reinforcing bars
  • Fields of application - e.g., splice rooftop hooked rebar

KZ-MB-S1

Product configuration
KZ-MB-S1 MBT coupler
KZ-MB-S1 MBT coupler with bolts removed

Performance Verification

Tensile testing

Verification of coupler performance through tensile failure testing.

MBT coupler broken at rebar

MBT coupler broken at rebar after tensile testing

Torque testing

Dimensional and torque verification using dedicated checking tools.

Gauge tools

Digital caliper (0.01mm / 0.0005")
Digital caliper
Digital torque wrench (100–1,000 N·m)
Digital torque wrench

Testing process

A clear sequence from tapping verification through final torque testing.

01

Tapping VerificationVerify the tapped connection before proceeding.

02

Measure NeckMeasure and record the neck dimension.

03

MBT SetupInstall rebar and bolt, then position the torque wrench.

04

Torque TestingTighten until the bolt breaks, then read the torque value.

Testing result example D40 S55C type