HAIHUI • REBAR THREAD PREPARATION
HGS40 / HGS50 Steel Bar Thread Rolling Machine
The Haihui steel bar thread rolling machine prepares straight threads on reinforcing bar ends for compatible mechanical coupler connections. HGS40 and HGS50 are two model options for rebar fabrication workshops and construction projects. Select the machine by the required bar diameter, thread specification and coupler system.
HGS40: 16–28 mm rebar, 4 kW motor. HGS50: 16–40 mm rebar, 7.5 kW motor.

HGS40 and HGS50 specifications
| Parameter | HGS40 | HGS50 |
|---|---|---|
| Rebar diameter range | 16–28 mm | 16–40 mm |
| Motor power | 4 kW | 7.5 kW |
| Rotational speed | 62–80 r/min | Confirm for selected configuration |
| Processing length | Confirm for selected configuration | 80 mm |
| Reducer gear ratio | 1:19 | 1:19 |
| Machine dimensions | 1100 × 600 × 1100 mm | 1100 × 600 × 1100 mm |
Model data follows the supplied product sheets. Confirm thread pitch, tooling, steel grade, voltage, frequency and final configuration before ordering. Machine dimensions are not export packing dimensions.

What is a rebar thread rolling machine used for?
A rebar thread roller is used to prepare reinforcing bar ends for threaded couplers. It is different from a steel bar bending machine: the intended operation is end threading rather than making stirrups, circles or arcs. The finished thread must match the selected coupler diameter, pitch and engagement requirements. Confirm the complete connection specification before selecting tooling.
Choose the model for your bar sizes
HGS40 covers the listed 16–28 mm bar range with a 4 kW motor. HGS50 extends the listed range to 16–40 mm with a 7.5 kW motor and an 80 mm processing length. For work involving bars above 28 mm, discuss the HGS50 configuration with Haihui. Do not infer actual processing capacity from the model number alone; use the specification table and your material requirements.
- Dedicated threading equipment: a motor-driven head and bar clamping arrangement for straight-thread preparation.
- Accessible manual controls: the photographed machines have hand levers and cabinet-mounted controls.
- Workshop format: both listed models have a 1100 × 600 × 1100 mm machine size and a wheeled cabinet.
- Application matching: select rollers and related tooling according to the required bar and thread specification.
Before requesting a quotation
Send your rebar diameters, steel grade, required thread pitch, thread length, coupler drawing and daily production target. Also provide the available electrical supply and destination country or port. This helps Haihui confirm the machine configuration and quote the appropriate tooling, packing and shipping terms. Ask which consumables and spare parts are included, and request a working video for the selected setup.
For a complete reinforcement processing workshop, explore our steel bar straightening machines, CNC stirrup bending machines and full product range.
Frequently asked questions
Which model is suitable for 32 mm or 40 mm rebar?
The supplied HGS50 sheet lists a 16–40 mm bar range. Send the steel grade and thread drawing to confirm the tooling and configuration for your application.
Is the HGS40 range 16–40 mm?
The supplied HGS40 sheet states 16–28 mm. This listing follows that stated range rather than assuming capacity from the model name.
Are couplers included?
This is a machine listing. Couplers, thread gauges, rollers and spare parts should be specified separately in the quotation so the supplied scope is clear.
Does machine threading guarantee connection compliance?
The finished thread, coupler and assembled connection must meet the project requirements. Confirm the required inspection method and connection test specification with your project team.
Rebar threading equipment from Xingtai, China
Xingtai Haihui Machine Tool Co., Ltd. supplies steel bar processing equipment from Xingtai, Hebei, China. Contact Haihui for HGS40/HGS50 steel bar thread rolling machine specifications, model selection, working videos and a current export quotation.
Send your rebar and thread requirements
Phone / WhatsApp: +86 13932960232
Location: Xingtai, Hebei, China
Category: Steel Bar Thread Rolling Machine