2024 Cold Drawn Aluminum Tube with Threaded Connection for Hydraulic and Pneumatic Cylinders

2024 Cold Drawn Aluminum Tube with Threaded Connection

The 2024 cold drawn aluminum tube is a seamless, high-strength tube intended for parts that must hold pressure or carry a moving load. It is produced by cold drawing, a process that pulls the material through a die to tighten the wall thickness and improve the finish and dimensional consistency of the bore and outside diameter. A threaded connection is machined at the end, so the tube can be joined straight into a cylinder or fitting without a separate welded adapter.

Material and Drawing Process

Aluminum 2024 is a copper-bearing alloy known for its high strength among aluminum grades. Cold drawing refines the wall and gives a straighter, more uniform tube than an as-extruded product, which helps keep the clearance between piston and bore constant along the length. Tubes can be supplied in a range of outside diameters, wall thicknesses and lengths, and the ends can be machined, threaded or chamfered to match a drawing.

Threaded Ends and Machining

Threads are cut on a lathe or machining centre to the pitch and diameter required, so the tube threads into the mating part without an adapter. This simplifies assembly of cylinders, dampers and telescopic sections, and it allows a single tube to be replaced if a thread is damaged. Other machining such as chamfers, grooves, flats and drilled ports can be added in the same setup.

Tolerances and Straightness

Because cylinder performance depends on a consistent bore, the drawn tube is checked for wall thickness, roundness and straightness after drawing. An even wall keeps the piston seal loaded uniformly and reduces wear, while a straight tube avoids side load on the rod. Buyers with tight requirements can specify the tolerance band, and tubes that need extra accuracy can be honed or finished after drawing to suit the application.

Typical Applications

• Hydraulic and pneumatic cylinder barrels
• Shock absorbers and damper bodies
• Telescopic tubes and sliding sections
• Precision shafts, sleeves and bushings
• Machined industrial and automotive components

Ordering Notes

Please provide the outside diameter, wall thickness, length and thread specification when ordering so the tube can be drawn and machined to suit the application. Surface finish, straightness and tolerances can be discussed for the intended use, and cut lengths or fully machined parts can be supplied. Confirm the grade and quantity required before ordering.