Class I Rebar Connector

There are two criteria for determining the level I joint:

1) The actual tensile strength of the reinforcing rebar connector must be greater than the standard strength of the reinforcing bar base material, and it must be broken from the reinforcing bar.

 2) If the connecting piece damages but didn't broken the steel bar, the actual tensile strength value of the rebar connector must be bigger than 1.1 times the standard tensile strength value of the parent material, and it can be judged as qualified when reach or over 594Mpa. The standard tensile strength value of HRB400 steel bar is 540Mpa.

Class II Rebar Connector

Judgment standard for grade II rebar connector: No matter which place of the rebar connector is broken, as long as the actual tensile strength value of the steel bar connector exceeds the standard tensile strength value of the steel base material by 540Mpa, it can be judged as qualified.

Class III Rebar Connector

Judgment standard for grade III rebar connector: No matter which place of the steel bar connectors is broken, as long as the actual tensile strength standard value of the steel bar connectors is greater than or equal to 1.25 times the standard value of the steel yield strength, that is, the actual tensile strength value of the steel bar connectors reaches 500Mpa, thye are can be judged as qualified.

Changsha DLADTO Rebar Splice Co., Ltd is a professional rebar coupler producer, we have been in this field for a long time with customers for all over the world. If you have any inquiry, welcome to contact us.