This aluminum inner connector features a unique dual-structure design. One end is inserted into the interior of the aluminum lean pipe, while the other end clamps tightly onto the outer groove of the lean pipe.

The special fitting structure allows the pipe joint to rotate flexibly after installation, unlike fixed connectors that cannot be adjusted. It supports free angle fine-tuning during frame assembly, greatly improving the flexibility and convenience of modular lean pipe structure installation and modification.

Compared with XY-7 and XY-7B connectors, this fitting is designed with a small protruding section at the lower part. Due to this structural bump, the joint cannot rotate freely or only delivers negligible rotation after assembly. It locks the lean pipe at a fixed position to guarantee stable framing without unwanted angular shifting.

This exclusive inner connector is professionally engineered for lean pipes, as shown in the left reference image. The side of the connector is equipped with raised grooves that perfectly match the standard protruding slots of lean tubes. This unique structural design allows additional connectors to be clamped and mounted on the side of the main joint. It enables multi-directional splicing and layered assembly, greatly improving the expandability and flexibility of your lean pipe frame structure, supporting more diversified modular combinations for industrial workbenches, storage racks and equipment frames.

This clampable right-angle inner connector boasts a practical grooved structure for seamless clamping connection. As demonstrated in the case picture, the protruding side grooves on the connector feature the exact same structural function as the outer raised grooves on standard lean pipes. This ingenious design enables secondary clamping and multi-angle connection on the side of the installed joint, breaking the connection limitations of ordinary single-function right-angle connectors.