Hi newcomer and welcome to the Tom's hardware forum.
Basically, the tri-channel kits are three single channel sticks that are installed in a mobo (x58 with i7-9xx series) for run in tri-channel. Like 4745454b says, the tri-channel only depends of the mobo chipset and the CPU.
Is the same with dual channel, that are two stick that run in single channel, installed in a mobo that support dual-channel and a processor that support that configuration too.