Tubular Stranding Lines

The Tubular Stranding Line is a purpose-built conductor manufacturing solution designed primarily for 7-core stranded conductors, combining a compact tubular frame architecture with the production flexibility required to handle the full range of conductor materials commonly used in modern cable manufacturing. The tubular design encloses the bobbins within a rotating tube, which allows all stranding elements to rotate as a unit around the central axis. 
This configuration produces a stable, low-vibration stranding action that is particularly well suited to larger conductor cross-sections, where bobbin weight and rotational inertia would otherwise limit achievable line speeds or compromise pitch consistency. The result is a stranded conductor with uniform lay, controlled outer diameter, and minimal residual stress — characteristics that directly determine downstream processability and finished cable performance. Compatible conductor materials include hard-drawn and annealed copper conductors, plain and coated aluminum conductors, and compacted copper conductors where the cross-section is physically compressed to reduce interstice area and improve fill factor in the final cable. 
This material versatility makes the tubular stranding line a single-machine solution for manufacturers producing conductors across multiple cable product lines within the same facility. Lay length is precisely controlled and programmable across a wide range, supporting compliance with IEC 60228 and other international conductor construction standards. The drive system is designed for energy efficiency at rated production speeds, with smooth acceleration and deceleration curves that protect both the machine and the conductor material during start-up and shutdown sequences. This tubular stranding line is a dependable choice for wire and cable manufacturers whose conductor production requirements center on 7-core configurations and who need the reliability and material flexibility to serve multiple end-product markets from a single production asset.