



Threading Machine 40mm - Rebar Thread Rolling Machine for Mechanical Splicing
The Hutaib Machinery Threading Machine creates precise threaded ends on 16-40mm rebar with 40-62 r/m shaft speed for fast coupler connection and mechanical splicing across South Indian construction projects. With 100mm max rolling length and 4 thread pitch options (1.75, 2.0, 2.5, 3.0mm), this semi-automatic threader delivers code-compliant connections for high-rise buildings, infrastructure projects, and prefabrication facilities.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | HMS |
| Model Name/Number | CDRG 45 |
| Capacity | 16-40mm |
| Main Shaft Speed | 40-62 r/m |
| Max Rolling Length | 100mm |
| Thread Pitches Available | 1.75, 2.0, 2.5, 3.0mm |
| Type | Semi-Automatic |
| Net Weight | 380 kg |
| Warranty | 1 Year Comprehensive |
Thread Pitch Compatibility:
- • 1.75mm pitch - for 16-20mm diameter bars
- • 2.0mm pitch - for 20-25mm diameter bars
- • 2.5mm pitch - for 25-32mm diameter bars
- • 3.0mm pitch - for 32-40mm diameter bars
Key Features and Benefits
Threading machines are essential for mechanical splicing in modern construction, offering superior connection strength, speed, and code compliance. Designed with multiple thread pitch options and high-speed rolling, these machines ensure precise threaded ends for coupler connections, eliminate lap splicing congestion, and enhance structural integrity.
With features like 16-40mm capacity and 100mm max rolling length, they enable efficient threading across high-rise buildings, infrastructure projects, and prefabrication facilities, making them an indispensable tool for contractors adopting mechanical splicing across South India.
Key Benefits
Wide Diameter Range
Handles 16-40mm rebar covering all common bar sizes for mechanical splicing.
Multiple Thread Pitches
1.75, 2.0, 2.5, 3.0mm pitches for compatibility with all standard couplers.
100mm Thread Length
Adequate rolling length for standard coupler requirements per IS 16172 guidelines.
Fast Production Speed
40-62 r/m shaft speed enables threading in 30-60 seconds per bar end.
Eliminates Lap Splicing
Mechanical splices reduce rebar congestion and improve concrete placement.
Code Compliant Joints
Creates full-strength splices meeting IS 456 and IS 16172 requirements.
Engineering Features
Thread Rolling Technology
Cold forming process strengthens thread roots for superior connection performance.
Heavy-Duty Construction
380kg robust frame ensures stability during high-torque threading for consistent results.
Precision Die System
Hardened dies deliver accurate threads with long service life.
Site-Ready Design
Transportable size allows on-site threading for prefabrication flexibility.
Mechanical Splicing Advantages
Full Strength Joints
Coupler splices achieve 125% of bar strength per code requirements.
No Lap Length
Eliminates 40-50 diameter lap lengths saving material and space.
Better Concrete Flow
Reduced congestion allows proper concrete placement around reinforcement.
Quality Assurance
Visible inspection of threaded connections ensures splice quality.
Applications Across South Indian Industries
This threading machine serves multiple construction and fabrication applications across Karnataka, Tamil Nadu, Kerala, Andhra Pradesh, and Telangana:
High-Rise Construction
Threading column bars for coupler splicing in multi-story buildings where lap splices would create congestion in Bengaluru, Chennai, and Hyderabad.

Infrastructure Projects
Creating threaded ends for bridge piers, metro structures, and flyover columns requiring mechanical splices across South India.

Prefabrication Facilities
High-volume threading for precast element production and modular construction facilities in Karnataka and Tamil Nadu.

Proven Use Cases
Column Starter Bar Threading
- Creates threaded ends for column dowels in foundations.
- Coupler connections enable floor-to-floor continuity.

Beam-Column Joint Threading
- Threads heavy-gauge bars for critical joints in seismic zones.
- Full-strength splices meet IS 13920 requirements.

Precast Connection Threading
- Produces threaded bars for precast connections in modular buildings.
- Consistent threads ensure reliable field assembly.

What Our Customers Say
“We switched to mechanical splicing for our high-rise projects and this threading machine has been excellent. The thread quality is consistent and our coupler connections pass every test. Production speed is good for our volume.”
Suresh Babu M.
Technical Manager, Construction Company
Bengaluru, Karnataka
“For infrastructure work where we use 32-40mm bars, this machine performs reliably. The multiple pitch options mean we can work with different coupler brands. Hutaib's service response has been quick when we needed spare dies.”
Karthik Rajan
Project Engineer, Metro Contractor
Chennai, Tamil Nadu
“We thread thousands of bar ends monthly for our precast production. This machine has been running for over a year with minimal maintenance. The thread rolling gives stronger threads than cutting - important for our structural connections.”
Venkateswara Rao
Owner, Prefab Facility
Hyderabad, Telangana
“Good machine for site use. We transport it between projects for on-site threading. The semi-automatic operation means our workers picked it up quickly. Thread quality has been consistent across all bar sizes.”
Pradeep Kumar
Site Engineer, Building Contractor
Coimbatore, Tamil Nadu
Trusted by 100+ Contractors Adopting Mechanical Splicing
Construction companies, infrastructure contractors, and prefabrication facilities rely on our threading machines for coupler-based splicing across Karnataka, Tamil Nadu, Andhra Pradesh, and Telangana.
Frequently Asked Questions
What rebar diameters can this threading machine handle?
This threading machine handles rebar from 16-40mm diameter, covering all common bar sizes used in construction for mechanical splicing applications in columns, beams, and foundations.
What thread pitches are available?
The machine supports multiple thread pitches: 1.75mm, 2.0mm, 2.5mm, and 3.0mm, compatible with standard rebar couplers and mechanical splices used across India.
What is the maximum thread length?
The maximum rolling length is 100mm, sufficient for standard coupler connections and mechanical splicing requirements as per IS 16172 guidelines for rebar mechanical splicing.
Is this machine suitable for construction site use?
Yes, at 380kg the machine is transportable and can be set up on construction sites for on-site threading. It requires a 3-phase 415V power supply which is standard on most construction sites.
What is the production speed?
With a main shaft speed of 40-62 r/m, the machine can thread a bar end in approximately 30-60 seconds depending on bar diameter and thread length, enabling efficient high-volume production.
What warranty and support is offered?
Every Threading Machine comes with a 1-year comprehensive warranty covering parts and labor, along with lifetime technical support via phone and WhatsApp. Spare parts and threading dies are readily available from our Bengaluru warehouse with 24-48 hour delivery.
Ready to Order Your Threading Machine?
Contact us today for the best price and free delivery across South India