

How does a rebar upsetting machine improve the quality and strength of rebar connections? In construction projects, the quality of rebar connections directly determines the structural safety and durability. A rebar upsetting machine enlarges the diameter of the rebar end by 3–5 mm through hydraulic cold forging, increasing the load-bearing area of the connection section. After upsetting, the rebar is processed with a threading machine and used with a straight-thread coupler. This method not only ensures the tensile strength of the joint exceeds that of the base material but also avoids damage to the rebar’s properties caused by heat processing. Compared to welding or lap splicing, mechanical upsetting connections are faster, more stable in quality, and more environmentally friendly. Contact us!【WhatsApp/WeChat/Phone】+86 13837122632
Key Advantages of Using a Rebar Cold Forging Machine
Higher connection strength than the base material – Meets the requirements of high-strength engineering.
Stable and reliable performance – Cold forging technology avoids the heat-affected zone.
High processing efficiency – Upsetting and threading can be completed quickly.
Wide application range – Suitable for bridges, high-speed railways, subways, tunnels, and high-rise buildings.
Single-Cylinder vs. Double-Cylinder Rebar Upsetting Machine – A Buyer’s Guide
Single-Cylinder Rebar Forging Machine Specifications

| Specification | Value |
| Applicable Diameter | 12–32 mm (Grade II–III construction rebar) |
| Piston Stroke | 140 mm |
| Max Flow Rate | 5.42 L/min |
| Upsetting Force | 2036 kN |
| Motor Power | 4 kW |
| Dimensions | 1020 × 500 × 965 mm |
| Net Weight | 560 kg |
| Features | Compact size, easy operation, portable; ideal for small to medium projects |
Ideal for small to medium-sized construction projects, featuring a compact size, easy operation, and high mobility.
Hydraulic Double-Cylinder Rebar Forging Machine Specifications

| Specification | Value |
| Processing Diameter | 16–40 mm |
| Power / Voltage | 11 kW / 380 V |
| Hydraulic Pump Capacity | 115 L |
| Weight | 1200 kg |
| Dimensions | 1350 × 950 × 1750 mm |
| Features | Higher power, larger processing range; suitable for large-scale projects and high-strength construction sites |
Offers greater power and a larger processing range, making it suitable for large-scale projects and high-intensity construction sites.
Structure and Working Principle of a Rebar Upsetting Machine
A rebar upsetting machine consists of a frame, clamping tongs, guide rails, sliding plate, cycloidal gear reducer, rib stripping and rolling head, feeding mechanism, automatic opening and closing mechanism, stroke limit system, cooling system, and an electric control box. During operation, the hydraulic system pushes the rebar end into the mold for cold forging to enlarge the diameter, followed by threading to ensure accurate dimensions and consistent quality.
Why Large-Scale Projects Must Use a Rebar Cold Forging Machine
No welding heat effect, preserving the original rebar properties.
Excellent seismic performance, with uniform force distribution at joints.
Lower worker skill requirements, with a short training cycle.
Environmentally friendly and energy-saving, with no welding fumes and low energy consumption.
Application Fields– From High-Rises to Tunnels
High-rise buildings and seismic-resistant structures
Bridges and overpasses with high-strength requirements
Subways and tunnels with limited construction space
High-speed railways and highway infrastructure
YG Machinery–A Brand You Can Trust
As a professional supplier of rebar processing equipment, YG Machinery offers a wide range of high-performance rebar cold forging machine models, all manufactured under strict quality control, with stable operation and complete after-sales service. YG Machinery has served multiple national key projects, making it a reliable partner for your construction needs. In addition, YG Machinery also provides high-quality threading machines, pipe bending machines, chain link fence machines, and rebar straightening and cutting machines.Contact us now!【WhatsApp/WeChat/Phone】+86 13837122632













