News
Rebar cages for bored piles fail in one place first: the variation.
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.
#EMG #SLP #PileCageMachine #PileCageWeldingMachine #RebarCageMachine #MIGWelding #GMAW #DeepFoundations #BoredPiles
15/12/2025
Sergio Di Carlo
Large Pile Cage Machine SLP2500
We are proud to introduce the SLP2500, a new addition to our pile cage machine range, specifically engineered for the efficient production of reinforcement cages with diameters from 800 mm to 2500 mm.
This machine is ideal for medium-sized pile foundations, especially around 2 meters in diameter, where precision, flexibility, and high welding quality are critical. The SLP2500 is equipped with a top-tier automatic welding system, ensuring superior and consistent welding results for every cage produced.
Pile Cage Machine in United States
Last week the first updated SLP Pile cage machine was installed in the United States
Suitable for cages up to a diameter of 1500 mm and a length of 20 meters. This machine is equipped with many new features, such as setting aid, automatic clamping, automatic welding system and adjustable welding time. In addition, it is very robust. Huge time savings are achieved with these features. Both our customer and we are very satisfied with the cooperation! Let many follow!
Piling
Piles are columnar elements in a foundation that can transfer load from the superstructure through weakly compressible strata or water onto stiffer or more compact and less compressible soils or rock. They may be required to carry uplift loads to support tall structures subjected to overturning forces from winds or waves.
The importance of the reinforcing ring
The internal reinforcing ring may be used where it is necessary to develop the complete external skin frictional resistance of the pile cage.
Hard driving through strongly resistant layers or sitting a pile onto a rock may split or tear the ring shoe.
In the case of hard-driving, it is preferable to adopt a welded-on thick plate shoe designed so that the driving stresses are transferred to the parent pile over its whole cross-sectional area.
Robotic assembly of rebar cages
Robust welding robot with exchangeable welding units for producing round or polygonal cages. Two welding machines for welding spiral on both sides of longitudinal bars are an option. Exact guiding and flexible guide rollers guarantee a precise welding point—computer-controlled welding speed which automatically determines the maximum speed possible.
The reinforcement cage processing
Reinforcement cage in accordance with the design drawings over like making. Installation of flange reinforced by localization, localization of the flange has the advantages of convenient operation, accurate positioning, high efficiency.
Region: Germany, year 2018
Schilt Engineering: Planning and delivery of an automatic rebar shearline with double benders, as well as a logistics system for straightening machine from coil.
Region: United Kingdom, year 2018
Schilt Engineering: Design and delivery of highly automated rebar shearline MULTIBAR500 with connected rebar double benders and logistics.
Region: Hong Kong, year 2017
Schilt Engineering: Planning and delivery of 2 highly automated rebar shearlines with combined internal warehousing and multiple double bender.