Aluminium Alloy Coil Pipe and Flexible Tube with Bending Welding and CNC Machining for Refrigerator Use

Aluminium alloy coil pipe and flexible tube is made for refrigerator assemblies and other compact cooling equipment, where a formed tube must follow a fixed route inside a tight cabinet and still carry refrigerant between the parts around it. Aluminium alloy coil or straight stock is bent to the shape the cabinet needs, and welded where the circuit has to stay closed.

Bending lets one length of tube follow the internal layout of a refrigerator without joints that would have to be sealed later. Each bend is set from the drawing so the run clears the compressor, the evaporator and the condenser, and the tube ends point at the connections that receive them.

CNC machining gives the tube ends the geometry the next stage expects: cut square, faced to length, drilled for a fitting, or turned down to a step that slips into a connector. Because the bends and the ends come from the same drawing, the routing and the end form match each other.

Aluminium alloy keeps the part light, holds up in the moist air that builds up around a working cooling system, and moves heat quickly where the tube also acts as a heat transfer surface. Softer material is used where tight bending is needed, and firmer material where the finished shape has to hold on its own.

Work follows the same checkpoints on each order. Incoming coil is inspected before cutting, bend angles, leg lengths and end positions are measured against the drawing during forming, welded areas are checked once the parts have cooled, and finished tubes are measured once more before they are bundled. Parts outside the agreed tolerance are set aside and reported rather than shipped.

Tube form is set from the customer drawing, so the parts arrive with the routing already in place. Straight lengths, coil form and pre-bent tube are all possible, and the end finish is chosen together with the drawing. Where a sample part exists, it can be measured and used as the reference for the first production run.

Refrigerator builders use formed aluminium tube for cooling circuits, condenser and evaporator connections and internal runs between the compressor and the cooling surfaces, and the same tube suits display cases and small chillers where the routing and the material state match.

Drawings and samples are reviewed before production so the tube form, the end finish and the material state are clear on both sides, and changes are confirmed in writing before they are run. Bent tube is bundled, protected in transport and labelled by drawing number, and questions on a specific assembly are answered with the drawing in hand.