Quick answer: The HENAN XINYUCHUANG rebar bender and cutter (model GTW4-12D) is a CNC-controlled, servo-driven stirrup bending machine built by Henan Xinyuchuang Machinery in China. It straightens, bends, and cuts rebar between 4mm and 13mm in a single automated cycle, producing up to 1,840 pieces per hour with a bending accuracy of 1° and a processing tolerance of just 1mm. We’re breaking down exactly what it does, how it performs on a real job site, and everything you need to know before you buy one — so you don’t have to go digging through five different tabs to get the full picture.
I’ve spent the last few weeks researching this machine in depth, cross-checking the manufacturer’s technical sheets against field reports and industry standards, because I wanted this guide to actually answer every question a buyer, contractor, or steel fixer would have. What follows is everything we found — specs, real-world use, setup, maintenance, troubleshooting, and how it stacks up against other Henan Xinyuchuang models.
What Is a Rebar Bender and Cutter?
A rebar bender and cutter is a single machine that combines three jobs that used to require three separate machines and three separate crews: straightening coiled steel bar, bending it into a stirrup shape (the closed loops or hoops that reinforce concrete columns and beams), and cutting it to the exact length needed. In older workshops, this meant manually feeding bar through a straightener, walking it to a bender, then over to a cutter — with a person handling the steel bar at every stage.
Modern CNC versions like the HENAN XINYUCHUANG GTW4-12D fold all three steps into one automated line. You load coiled rebar in one end, punch in (or select) a stirrup shape on the control panel, and finished stirrups come out the other end — straightened, bent to spec, and cut to length, with no manual repositioning in between.
Who Makes It: A Quick Word on HENAN XINYUCHUANG
Henan Xinyuchuang Machinery Manufacturing Co., Ltd. is a China-based manufacturer of rebar processing equipment, operating out of Changge City, Henan Province. The company builds a full lineup of steel bar machinery — stirrup benders, rebar cutters, straightening machines, steel bar cage welding lines, and bending centers — and has been supplying this equipment for construction, bridge, and precast projects. Henan Xinyuchuang’s machines, including the GTW4-12D, are reported to have shipped to more than 20 countries, among them Israel, Russia, Romania, and India. The company also holds several national patents on its bending technology, which matters if you’re trying to gauge whether a manufacturer is a genuine engineering operation or just an assembler of third-party parts.
I want to be upfront about something: this is a China-manufactured industrial machine, and like any capital equipment purchase from overseas, due diligence on the supplier, warranty terms, and after-sales support matters just as much as the spec sheet. We’ll get into what to ask before you buy later in this guide.
GTW4-12D: Core Features Explained
Here’s what actually sets this model apart, translated out of marketing language into plain terms:
1. Three functions, one machine. Straightening, bending, and cutting happen in a single integrated pass, which is the entire point of buying a “bender and cutter” instead of separate units — it cuts down on floor space, labor, and handling time.
2. Servo motor control. Instead of hydraulic or purely mechanical drive systems, the GTW4-12D uses servo motors for its main functions. Servo control gives you tighter repeatability — the same shape comes out the same way every time — and the machine is rated for single-thread processing of 12mm rebar and double-thread processing of 10mm rebar simultaneously.
3. Speed and output. The machine is rated to bend at up to 1,840 pieces per hour, with a stated real-world output of roughly 7 tons of processed rebar per shift when running 240×240mm stirrup sizes. Maximum pulling (feed) speed is 110 meters per minute.
4. Accuracy. Processing accuracy is rated at 1mm and bending accuracy at 1°. In stirrup fabrication, that tolerance is what separates a batch that passes quality control from one that gets rejected on site.
5. Programmable shape library. The control system can store up to 100 pre-programmed processing graphics (stirrup shapes), and operators can also create custom shapes to match project-specific drawings. This is a big deal on jobs where you’re switching between column stirrups, beam stirrups, and custom shapes throughout the day — you’re not re-tooling the machine, just recalling a saved program.
6. Remote operation and multi-protection. The GTW4-12D includes remote positioning and operation, along with what the manufacturer describes as intelligent multi-layer protection functions — designed to stop the machine automatically if something goes wrong, rather than relying purely on operator reaction time.
7. Build quality on wear parts. The manufacturer states the main structural parts are made from high-quality steel rated to process roughly 1,500 tons of rebar before needing replacement, and the cutting blades are vacuum-quenched tool steel, which is a hardening process that improves edge retention and resistance to chipping under repeated impact — a genuinely important detail, since blade replacement frequency is one of the biggest hidden running costs on any rebar cutter.
8. Branded electrical components. The control cabinet uses Schneider electrical components, which matters for long-term reliability and for sourcing replacement parts locally in most countries, since Schneider has a global distribution network.
Full Technical Specifications: GTW4-12D CNC Rebar Bender and Cutter
We pulled these directly from the manufacturer’s technical data sheet so you have every number in one place:
| Specification | Value |
|---|---|
| Single round wire diameter | φ4–13 mm |
| Double round wire diameter | 4–10 mm |
| Single ribbed wire diameter | 4–12 mm |
| Double ribbed wire diameter | 4–10 mm |
| Central mandrel diameter | 20–30 mm |
| Max. bending angle | 180° |
| Max. pulling (feed) speed | 110 m/min |
| Max. bending speed | 1,840 pcs/hour |
| Servo motors | 18kW + 7.5kW (two units) |
| Brake motor | 4kW |
| Air pump motor | 4kW |
| Voltage | 380V / 415V |
| Average power consumption | 5kW/h |
| Overall dimensions | 3500 × 1120 × 2150 mm |
| Gross weight | 2.55 tons |
A note on the numbers: the “single vs. double” wire diameter distinction matters when you’re speccing out this machine. If you’re mostly bending single-strand rebar up to 13mm, you’re at the top of this machine’s range. If you regularly need to process two strands simultaneously (a common technique for smaller stirrups to double throughput), your practical ceiling drops to 10mm ribbed bar. Confirm which mode matches your typical stirrup spec before ordering — this is exactly the kind of detail that gets glossed over in a sales call but shows up as a real limitation on-site.
How the GTW4-12D Actually Works, Step by Step
Based on the manufacturer’s operating procedure and standard practice for this class of machine, here’s the real workflow:
- Loading: Coiled rebar is mounted on the decoiler/pay-off stand and fed into the straightening rollers.
- Straightening: The bar passes through a set of straightening rollers that remove the coil curvature, so the steel enters the bending head dead straight.
- Feeding to length: Servo-controlled feed rollers pull the bar forward at up to 110 m/min to the exact length programmed for the stirrup shape.
- Bending: The bending head, driven by the main servo motor, rotates the bending pin around the mandrel to form each corner of the stirrup shape, following the pre-programmed graphic.
- Cutting: Once the shape is complete, the vacuum-quenched cutting blade shears the bar to finish the piece.
- Repeat: The cycle repeats automatically, drawing from the stored shape library, until the batch quantity is complete.
On the setup side, technicians typically verify that the cutting blade aligns correctly with the wire outlet before running production — if the blade obstructs the outlet incorrectly, the feed sequence needs adjusting by swapping the wire opening order. This is one of those “five-minute check that saves you an hour of troubleshooting” steps that experienced operators build into their startup routine.
Where This Machine Gets Used
The GTW4-12D and machines like it are built for:
- High-rise and mid-rise building construction, where columns and beams need large volumes of consistent stirrups
- Bridge construction, where reinforcement cages require precise, repeatable bends
- Precast concrete plants, where speed and consistency directly affect production line throughput
- Rebar processing yards/fabrication shops supplying multiple job sites at once
If your operation is doing small residential jobs with occasional stirrup runs, a machine at this output level (7 tons/shift) is likely overkill — a manual or semi-automatic bender would be more cost-effective. This machine earns its price tag on volume.
Advantages Over Manual and Semi-Automatic Bending
We think it’s worth being specific here rather than just saying “it’s better”:
- Labor reduction: One operator can run a job that previously needed a straightening crew, a bending crew, and a cutting crew.
- Consistency: Manual bending introduces human variability — angle, length, and shape drift over a long shift as fatigue sets in. Servo-driven bending doesn’t get tired.
- Speed at scale: At nearly 1,840 pieces per hour, the throughput gap versus manual bending is enormous on large-volume jobs.
- Reduced material waste: Programmed lengths and consistent bending accuracy mean fewer rejected pieces.
- Safety: Removing manual handling from the bending and cutting stages reduces crush and laceration injury risk, which is one of the more common injury types in rebar yards.
- Weather independence: Because the process is servo-driven rather than manual-force-dependent, output doesn’t fluctuate with temperature or operator condition the way manual hydraulic benders sometimes can.
Installation, Setup, and Site Requirements
Before the machine arrives, plan for:
- Floor space: At 3500 × 1120mm footprint, plus decoiler space on the infeed side and clearance for finished stirrups on the outfeed side, you’ll want roughly a 6–7 meter working bay at minimum.
- Power supply: 380V/415V three-phase power is required. Confirm your site’s voltage and phase configuration matches before shipping — this is a common and costly oversight with imported industrial machines.
- Compressed air: The machine includes a dedicated air pump motor, so factor in an air line or standalone compressor if one isn’t already part of your setup.
- Foundation: At 2.55 tons, the machine needs a level, stable concrete pad — not temporary staging.
- Grounding: Confirm the power socket is properly grounded before first power-on; this is a standard pre-start check but one that’s easy to skip when a crew is in a hurry to get production running.
Maintenance and Care
To keep a CNC bender and cutter running at rated output over its service life, we’d recommend:
- Daily: Visual check of the cutting blade edge, clamp condition, and feed rollers for debris or wear before starting production.
- Weekly: Lubrication of moving mechanical joints per the manufacturer’s schedule, and a check of the bending pin and mandrel for play or looseness.
- Monthly: Inspection of servo motor mounts, electrical cabinet connections, and air pump pressure.
- As needed: Blade replacement — because the blades are vacuum-quenched tool steel, they last considerably longer than untreated steel blades, but they are still a wear item and should be replaced before they visibly chip or dull, not after.
Keeping a maintenance log tied to tonnage processed (rather than just calendar time) is the more reliable way to plan for the eventual wear-part replacement on a machine rated around 1,500 tons of throughput on its main components.
Common Problems and Troubleshooting
Problem: Bent stirrups are inconsistent in angle or length. This is almost always a feed calibration or mandrel wear issue, not a controller fault. Check the bending pin and mandrel for wear first, then verify the programmed graphic matches the intended shape.
Problem: Cutting blade doesn’t cleanly shear the bar. Usually a sign the blade needs sharpening or replacing, or that blade alignment with the wire outlet has shifted. Confirm alignment as part of your startup check.
Problem: Machine won’t feed rebar smoothly. Check the straightening rollers for debris, rust flake buildup, or misalignment — this is the most common cause of feed inconsistency on rebar lines generally, not specific to this model.
Problem: Uncertain which wire mode (single vs. double) to run. Match your stirrup drawing to the diameter table above before programming the shape — running double-thread mode above its 10mm rating will stress the mechanism and shorten component life.
GTW4-12D vs. Other HENAN XINYUCHUANG Stirrup Benders
If you’re comparing options in the same product line, here’s roughly how the GTW4-12D positions against its siblings:
- GTW4-12A: A related model in the same capacity class; if you’re choosing between the two, the deciding factors usually come down to specific feature sets and control system generation rather than raw bending capacity, so it’s worth requesting a side-by-side spec sheet from the supplier.
- GTW8-16A: A larger-capacity machine intended for bigger bar diameters and higher-volume operations than the GTW4-12D — the right call if your typical stirrup sizes and tonnage needs exceed what the 4-13mm range covers.
- GTW4-12M: Another model in the 12mm-class range; again, confirm current specs directly, since manufacturers periodically update control systems and features within a model family.
Our honest recommendation: match the machine to your actual bar diameter range and shift-volume needs first, and only then compare price — buying more capacity than you need adds cost without adding value, and buying less means you’ll bottleneck your own site.
What to Ask Before You Buy
Since this is an overseas capital equipment purchase, we’d push you to get clear, written answers on:
- Warranty length and what it covers (parts, labor, shipping of replacement parts)
- Availability of spare parts (blades, servo motors, controller boards) and typical lead time
- Whether installation/commissioning support or training is included
- Confirmed voltage/frequency compatibility with your country’s power grid
- Shipping, customs, and total landed cost — not just factory price
- Reference customers or completed projects you can verify independently
Frequently Asked Questions
What is the HENAN XINYUCHUANG GTW4-12D used for? It’s used to straighten, bend, and cut rebar into stirrup shapes for reinforced concrete construction — columns, beams, bridges, and precast elements.
What size rebar can the GTW4-12D process? Single round wire from 4–13mm, double round wire 4–10mm, single ribbed wire 4–12mm, and double ribbed wire 4–10mm.
How fast is the GTW4-12D? Up to 1,840 pieces per hour at maximum bending speed, with a feed speed of up to 110 meters per minute.
How accurate is the bending? The manufacturer rates processing accuracy at 1mm and bending accuracy at 1°.
What power supply does it need? 380V/415V three-phase power, with average consumption around 5kW/h.
How many stirrup shapes can it store? Up to 100 pre-programmed shapes, with the ability to add custom graphics for project-specific designs.
How much does the GTW4-12D weigh, and what’s its footprint? Gross weight is 2.55 tons, with overall dimensions of 3500 × 1120 × 2150mm.
Is this a hydraulic or servo-driven machine? It’s servo-driven — the main bending and feed functions run on two servo motors (18kW and 7.5kW), which is what gives it its accuracy and repeatability compared to older hydraulic designs.
How long do the cutting blades last? The blades are made from vacuum-quenched tool steel for extended edge life, but exact lifespan depends on rebar hardness, diameter, and daily tonnage — track wear against tonnage processed rather than calendar time.
Is the HENAN XINYUCHUANG GTW4-12D a good fit for small job sites? Not typically. Its output (roughly 7 tons per shift) is built for high-volume operations like rebar processing yards, precast plants, and large building or bridge projects. Smaller jobs are usually better served by a lower-capacity or semi-automatic bender.
Final Take
After going through the full spec sheet, the operating process, and the practical maintenance and buying considerations, our view is that the HENAN XINYUCHUANG GTW4-12D is a serious high-volume production tool, not an entry-level machine. It earns its place on a job site where stirrup consistency, throughput, and labor reduction directly affect your bottom line — a rebar yard supplying multiple projects, a precast plant, or a large-scale building or bridge job. If you’re weighing it against a purchase, treat the spec sheet as the starting point and the warranty, spare-parts availability, and supplier track record as the deciding factors — because on any imported industrial machine, what happens after the sale matters just as much as what’s on the data plate.
