Your Leading Clamp Supplier
Trust In Grid Co., Ltd. is a professional transformer manufacturer, specializing in the design and production of power transformer, high-voltage switchgear, power distribution equipment, energy storage systems (ESS), magnetic wire, bushing and machining parts. Our power transformers are available in 500KV, 330KV, 220KV, and 110KV models, and are widely used in power utilities, renewable energy systems (solar and wind), industrial facilities, data centers, transportation infrastructure, and OEM applications.
Why Choose Us?
Production Capacity
With 6 factories covering 240,000 m², over 2,000 employees, and 200+ engineers, we support large-scale projects and long-term global supply with more than 30 years of export experience.
Advanced Equipment
We operate a complete set of in-house production equipment, including cutting, winding, CNC machining, vacuum drying, and testing systems, with over 450 machines ensuring stable quality and efficient output.
Quality Control
All products are manufactured and tested in compliance with IEC, IEEE, ANSI, CSA, UL/cUL, CE, and ISO 9001:2015 standards, ensuring reliable performance and smooth international approval.
OEM & ODM Capability
Our engineering team provides OEM/ODM support, including customized design and technical optimization, delivering tailored solutions for utility, industrial, and renewable energy projects.

Channel Steel, Square Tube, Bending Clamp
Our channel steel, square tube, and bending clamp series are precision-manufactured structural components designed for core clamping in dry-type and oil-immersed distribution transformers, ensuring winding alignment accuracy and long-term operational stability.
Triangular Clamp
Our triangular clamping frames for wound-core transformers feature 3D topology-adaptive design and fully automated intelligent manufacturing, delivering precise three-dimensional core constraint for enhanced reliability and reduced operational vibration.
Main Transformer Web Clamp
Our main transformer web-plate clamping frames feature high-strength box-type construction, delivering exceptional short-circuit withstand capability for 110–500kV power transformers.
Specifications of Clamp
|
Parameter |
Description |
|
Product Category |
Transformer Clamp / Clamping Structure |
|
Product Types |
Channel Steel Clamp / Square Tube Clamp / Bending Clamp / Triangular Clamp / Main Transformer Web Clamp |
|
Manufacturing Process |
CNC Machining, Laser Cutting, Bending, Welding, Assembly |
|
Material Options |
Carbon Steel, Alloy Steel |
|
Structure Type |
Welded Frame / Box-Type Structure / Triangular Frame |
|
Application Voltage Range |
Distribution Transformers / 110kV – 500kV Power Transformers |
|
Function |
Core Clamping, Winding Fixation, Structural Reinforcement |
|
Surface Treatment |
Powder Coating / Painting / Galvanizing / Anti-corrosion Coating |
|
Dimensional Tolerance |
±0.1 mm – ±0.5 mm |
|
Welding Standard |
MIG / TIG / Submerged Arc Welding |
|
Mechanical Strength |
Designed for high mechanical load and short-circuit resistance |
|
Vibration Control |
Structural design to reduce vibration and noise |
|
Assembly Compatibility |
Compatible with dry-type and oil-immersed transformers |
|
Standards Compliance |
IEC, ANSI, ISO |
|
Customization |
Fully customizable based on drawings and technical specifications |
|
Quality Control |
Dimensional inspection, welding inspection, load testing |
Advantages of Clamp
3D TopologyAdaptive Design
Specifically developed for the helical structure of the triangular wound core, utilizing 3D modeling and mechanical simulation for optimization. The frame achieves highprecision contour matching with the core, ensuring uniform distribution of clamping force, effectively suppressing core vibration and noise, and enhancing transformer efficiency and durability.
Global Standard Compliance
The product design and manufacturing processes comply with international standards such as IEC and IEEE. Materials are selected from globally certified highstrength steel, meeting regional specifications for mechanical strength, environmental adaptability, and safety.
Fully Automated Intelligent Manufacturing
The core manufacturing process relies on robotic automated welding workstations and CNC machining centers. This enables digital control of welding parameters and millimeterlevel repeatable path accuracy, ensuring consistent weld penetration, aesthetically formed seams, and achieving the highest industrial standards for product structural strength and dimensional consistency.
Batch Delivery Capability
The production line is configured for global batch orders and possesses flexible manufacturing capabilities. It can efficiently respond to largescale centralized procurement demands, supporting rapid delivery of standardized products and flexible adaptation to customized dimensions, ensuring supply chain stability for global customers.
Food & Beverage Industry:
Used for connecting pipelines for milk, beer, juices, and water. They're especially suitable for CIP (Clean-in-Place) and SIP (Sterilize-in-Place) systems to maintain hygiene without dismantling equipment.
Pharmaceutical Industry:
Ideal for transporting liquids and active pharmaceutical ingredients in sterile conditions. Their design simplifies cleaning and validation processes.
Biotechnology & Medical Technology:
Critical in bioprocessing environments requiring ultra-pure connections compatible with sterile surroundings and single-use systems.
Cosmetics & Chemical Industry:
Applied in processes involving emulsions, gels, and liquids, thanks to their resistance to aggressive media (depending on material selection).
Home & Hobby Breweries:
Popular for their ease of installation, removal, and cleaning, making them a go-to choice for small-scale brewers.

Order Process
Drawing Review
Submit your 2D drawings or 3D files. Our engineering team checks feasibility and key requirements.
Technical Evaluation
We review materials, structure, tolerances, and application conditions to ensure manufacturability.
Quotation
A detailed quotation is provided, including cost, lead time, and technical notes.
Sample / Prototype (if required)
Samples are produced for validation before mass production.
Mass Production
Production is carried out under controlled processes with consistent quality standards.
Inspection & Delivery
All parts undergo final inspection before secure export packaging and shipment.
Customization Options
| Size: | Customizable |
| Structure: | Customizable |
| Material: | Carbon steel (e.g., Q235, Q345), alloy steel |
| Logo: | Customizable |
| MOQ: | Customizable |
Installation Notes of Clamp
Align Ferrules Properly
Ensure the flanges are parallel to avoid uneven gasket compression and leaks.
Use the Right Gasket
Select a gasket material compatible with the fluid and rated for the operating temperature and pressure.
Tighten Evenly
Apply consistent pressure to the clamp to avoid warping the flanges or damaging the gasket.
Inspect Regularly
Check for gasket wear, corrosion on clamps, or misalignment during routine maintenance.
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
Our Service Highlights
Pre-Sales Consultation & Design Support
Early technical engagement to define requirements and deliver optimized solutions.
During Sales & Project Execution
Transparent project management with controlled production, quality tracking, and on-time delivery.
Warranty Advantage
Minimum 2-year warranty on all products, ensuring reliable and risk-free operation.
After-Sales Support
24/7 technical support with fast response, spare parts availability, and training services.
Long-Term Partnership
Lifelong technical support and upgrade guidance for sustained performance.
Packaging & Shipping
Packaging details:
Shockproof foam/moisture-proof film, professional export cartons/wooden crates/pallets.
Final assembly ensures mechanical integrity and readiness for transportation and installation.

Certificates





We're well-known as one of the leading clamp manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality clamp made in China here from our factory. Contact us for more details.
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