Low‑Burr Slitting
Rigid knife stands, controlled tension and precise settings help you achieve consistently low burr levels.
SIRUI Electical Equipment
SIRUI designs and manufactures complete slitting & cut to length lines for transformer cores. Our lines combine high precision, high speed and practical automation to help you upgrade core manufacturing with confidence.
SIRUI Machinery
Precision Manufacturing
Evolving Since 1997
Rooted in China’s manufacturing ecosystem and serving global markets, SIRUI develops high-performance silicon steel processing equipment for demanding industrial applications.
By combining in-house engineering, automation expertise and system integration capability, we deliver production lines that compete on performance, reliability and long-term cost.
Our goal is simple: help customers build iron core production systems that last.
Engineering / Quality / Trust /
Witnessing Quality with Reality
Our slitting, cut‑to‑length and stacking solutions are built for transformer core manufacturers of any scale. Each line is configured around your laminations and design requirements.
At CWIEME Berlin
“Most exhibitions lack the ‘real thing,’ but at Nantong Sirui, we believe in showing, not just telling. We brought our equipment to Berlin to give our clients a genuine experience of our technology. This reflects our confidence in our machinery and proves that Chinese manufacturing has reached a world-class level. “
Yanan Zhang
Chairman, Nantong Sirui Engineering
Technology Behind Our Transformer Core Lines
Our slitting & cut to length lines for transformer cores combine mechanical rigidity, smart automation and process know‑how gained from years in electrical steel applications.
High-speed cut to length
High-stroke cutting sections and stable feeding help you increase laminations per minute.
Flexible V‑Notching and Punching
Configurable notching and punching heads support different step-lap patterns and window designs.
Automatic Stacking Systems
We have two stacking solutions: integrated robot arms for in-line assembly and dedicated machines for high-volume production.
Cost-Effective Cutting
Our standard-speed cutting machine delivers stable, high-quality results at an economical price, offering exceptional cost-effectiveness.
In-House R&D
Our in-house development of key components ensures a reliable parts supply and a clear path for future technical enhancements.
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Transformer Cores We Focus On
Our slitting, cut‑to‑length and stacking solutions are built for transformer core manufacturers of any scale. Each line is configured around your laminations and design requirements.
Power Transformer Cores
For large, extra‑high‑voltage and ultra‑high‑voltage power transformers.
- Handles wider, thicker and higher‑grade silicon steel
- Robust slitting and cutting for heavy laminations
- High accuracy to support demanding grid applications
SRHJ400-224G
Distribution Transformer Cores
For urban, township and building distribution networks.
- High automation for standardized, high‑volume production
- Fast slitting and CTL to support large batch sizes
- Automatic stacking for consistent, repeatable core quality
SRHJ400-224G
Special Transformers & Reactors
For electric furnaces, rectifiers and wind/solar applications.
- Flexible configurations for varied, non‑standard designs
- Recipe‑based changeover for different core geometries
- Designed to keep quality and throughput under control
SRHJ400-224G
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Proven by International Standards
Our quality and safety processes are supported by multiple certifications and management systems.
