Not the design — the inconsistency in assembly and welding.
That’s why MIG welding on a pile cage machine is so effective when it’s engineered.
The science:
Steel is weldable when its chemistry stays inside limits — engineers use Carbon Equivalent (CE / CEV) to predict weldability and control heat effects.
The standards:
In Europe, Eurocode 2 points rebar welding to EN ISO 17660.
In the US, welding practice is anchored to AWS D1.4, and “weldable rebar” is typically ASTM A706.
What the SLP pile cage machine adds:
• MIG welding with constant welding time (so welds don’t “drift” with rotation speed)
• PLC-managed welding parameters (repeatability is the key)
• Dual-torch option to cut cycle time while keeping the weld logic consistent
Result: repeatable rebar cage welding you can scale for deep foundations / bored piles — with a process that aligns with the standards engineers already reference.
