A steel threading machine is the equipment that creates threads on rebar ends for mechanical splicing. It uses a cold-forming process that displaces metal rather than cutting it away, producing threads that are stronger than the parent bar. These threads engage with couplers to create connections that develop the full tensile strength of the rebar. The YG series rebar thread rolling machine offers three models covering standard, upgraded, and fully automatic configurations. Every model processes 16- 40 mm rebar with thread lengths from 60- 100 mm. If you are looking for a reliable automatic thread rolling machine that delivers consistent, high-quality threads, the YG series provides proven performance.
Steel Threading Machine Technical Specifications:
| Model | YGS-40 | YGT-40 | YGA-40 |
| Processing diameter range | 16-40mm | ||
| Thread rolling length | 0-80mm | 0-80mm | 0-100mm |
| Power voltage | 4kw/380v 50hz | 4kw/380v 50hz | 7.5kw/380v 50hz |
| Working efficiency | 15s/forming | 8s/forming | One-touch auto forming |
| Machine weight | 320kg | 350kg | 400kg |
| Machine size | 115*50*106cm | 110*60*130cm | 126*70*106cm |
| Type | Standard type | Upgrade type | Fully automatic type |
Product Features of Steel Threading Machine
- One-clamping integrated workflow completes rib stripping and thread rolling in a single setup, eliminating dimensional deviation caused by secondary clamping of steel bars.
- Dual thread direction capability produces both right-hand and left-hand threads on one unit, adapting to diverse connection design requirements from different engineering drawings.
- Cold-rolled non-cutting forming preserves the internal metal fiber structure of rebar, so finished thread sections gain 20%-30% higher tensile strength, 40%-60% better fatigue resistance and 50%-200% improved corrosion performance compared to raw rebar stock.
- Pure copper motor paired with industrial-grade reducer delivers stable torque output during long continuous processing shifts, resisting overheating under heavy batch workloads.
- Standard 380V 50Hz power input matches common industrial power supplies on construction sites worldwide, with no custom voltage conversion hardware required.
- Thickened machine body fitted with rubber walking wheels allows short-distance relocation between reinforcement working zones without heavy lifting equipment.
- A rebar thread rolling machine of this type supports both plain round steel and ribbed deformed rebar processing, with only simple parameter adjustments needed between material types.
Steel Threading Machine Applications
The YG series steel threading machine is used in projects where mechanical splices are required or preferred over lap splices and welding:
- High-Rise Buildings. Column and beam connections in high-rise structures require mechanical splices that develop the full tensile strength of the rebar. Threaded splices are specified because they are reliable, fast, and require no welding.
- Bridges. Bridge girders and decks require rebar connections that exceed the tensile strength of the parent bar. Threaded splices meet this requirement and are widely specified in bridge design. The connections must be reliable, and threaded splices provide consistent, testable joints.
- Tunnels and Subways. Tunnels and subway systems require rebar connections in confined spaces. Threaded splices provide reliable connections without welding in hazardous conditions. The connectors can be made quickly with a torque wrench.
- Precast Concrete. Precast concrete plants produce elements that are assembled on site. Threaded connections between precast elements require accurate, consistent threads. The YG series provides the production capacity needed for precast operations.
- Power Stations and Industrial Facilities. Power plant and industrial facility construction requires rebar connections for structural elements. Threaded splices are specified for their reliability and strength.
Working Principle of the Rebar Thread Rolling Machine
The working sequence relies on cold plastic deformation rather than material cutting, which is the key difference from traditional cutting-style threading tools. First, the clamping jaw locks the rebar end firmly in position to prevent lateral shaking during processing. Next, the rib-stripping cutter removes the outer transverse ribs on the rebar surface to create a smooth cylindrical blank section. Then precision rolling dies apply steady radial pressure to the blank section, extruding complete thread teeth through cold forming without scraping away base metal. The entire sequence finishes in one continuous machine cycle, and the automatic thread rolling machine variant executes the full sequence with one-touch operator input. Since material is reshaped instead of removed, the internal metal fiber structure stays continuous and intact, delivering stronger and more durable joint performance than cut-thread alternatives.
How Does the Threading Process Affect Rebar Strength?
The YG series steel threading machine uses a “peeling and rolling” process. This is not the same as cutting threads.
Peeling removes the ribs from the rebar end. The ribs are necessary for bonding with concrete, but they interfere with thread formation. The machine removes them cleanly and precisely.
Rolling forms the thread by displacing metal, not cutting it away. The rolling dies press the steel into the thread form. This cold-working process increases surface hardness and fatigue resistance. The grain structure of the steel follows the thread contour, creating a continuous flow of metal.
The result: A thread that is stronger than the parent bar. Threads formed by rolling have 20-30% higher tensile strength and 40-60% higher fatigue strength than cut threads. This matters because mechanical splices must develop the full strength of the rebar.
Rebar Threading Machine Price
Every steel threading machine from YG is built with pure copper motors, branded reducers, integrated machine heads and wear-resistant clamping jaws to deliver stable long-term performance under dusty and high-vibration construction site conditions. We supply standard, upgraded, fully automatic and extended-length variants to cover small residential jobs up to large national infrastructure projects. Our technical team matches the exact configuration to your rebar diameter, daily processing volume and required thread length, and provides clear rebar threading machine price breakdowns with no hidden fees. If you need a reliable automatic thread rolling machine for your reinforcement fabrication workflow, share your project processing parameters with our team today to receive customized model recommendations and a formal quotation promptly.
