Precision Cast Iron Square Box China Factory and Professional Suppliers
The Storan Cast Iron Square Box is a high-precision industrial fixturing solution engineered for the most demanding metrology and machining environments. Crafted from premium HT200-HT300 gray cast iron and subjected to rigorous stress-relief heat treatment, these boxes provide an exceptionally stable reference plane for perpendicularity and parallelism measurements, ensuring that your quality control processes meet the strictest global standards.
Designed for versatility and endurance, our square boxes feature machined T-slots and cored as-cast slots to facilitate secure clamping of heavy workpieces. Whether you require a standard Grade 2 or 3 precision level or a custom-sized solution with a hand-scraped finish for sub-micron accuracy, Storan delivers the structural integrity and dimensional consistency required for aerospace, medical, and automotive manufacturing.
Detailed Parameters
| Material Grade | HT200-HT300 Gray Cast Iron | Precision Grade | Grade 2 & Grade 3 |
|---|---|---|---|
| Surface Hardness | HB160-240 | Surface Treatment | Hand-scraped or Finish-milling |
| Foundry Process | Sand Casting or Centrifugal Casting | Molding Type | Resin Sand Molding |
| Surface Features | Flat, T-slots and Cored As-cast Slots | Working Temp | (20±5)℃ |
| Coating | Pickling Oil / Anticorrosion Paint | Packaging | Industrial Plywood Box |
Key Advantages
Extreme Wear Resistance
Utilizing HT200-HT300 alloy with 160-240HB hardness, our boxes withstand 10,000+ clamping cycles without surface degradation.
Thermal Stability
Low thermal expansion coefficients ensure dimensional consistency (±0.02mm/m) across temperatures from 10°C to 40°C.
Sub-Micron Precision
Optional hand-scraping achieves ±5μm precision and Class 0 flatness for critical aerospace and medical inspections.
Stress-Relieved Casting
A 550°C annealing process eliminates 90% of casting stress, preventing long-term warping and micro-cracks.
High Load Capacity
Supporting static loads up to 500kg without deformation, ideal for heavy machinery engine component testing.
Global Standard Compliance
Fully compliant with GB/T 4986-2004 and ISO 8512-1 standards, verified by CMM 3D laser scanning.
Product Gallery
Management Platforms
OEM/ODM Customization
Full support for custom dimensions and specifications tailored to your unique industrial requirements.
Precision Engineering
Advanced resin sand molding and centrifugal casting for uniform wall thickness and stability.
Quality Assurance
Every unit is CMM inspected and backed by a 1-year warranty against material defects.
Surface Optimization
Offering both cost-effective finish-milling and high-end hand-scraping for varied precision needs.
Logistics Expertise
Secure export packaging in plywood boxes with anti-corrosion coatings for safe global transit.
Technical Support
Expert guidance on material selection (HT200 vs HT300) based on your load and wear requirements.
Investment Return Comparison
| Feature | Generic Cast Iron Box | Storan Premium Box |
|---|---|---|
| Lifespan | Standard (1-2 years) | Extended (3x longer) |
| Precision Drift | Moderate (High thermal expansion) | Minimal (Stress-relieved) |
| Surface Flatness | Machine Ground (Ra ≤1.6μm) | Hand-Scraped (±5μm) |
| Load Stability | Prone to deformation under load | High (Up to 500kg static) |
| TCO (Total Cost) | High (Frequent replacement) | Low (Long-term durability) |
Frequently Asked Questions
HT200 is ideal for general-purpose precision measurements, while HT300 offers higher hardness (up to 240HB) and superior wear resistance, making it better suited for extreme loads and heavy-duty industrial fixturing.
Hand-scraping creates a high density of precision contact points (25-30 per 25x25mm), which increases the load-bearing area by 30% and achieves sub-micron flatness (±5μm), far exceeding the accuracy of machine grinding.
Our 550°C annealing process eliminates approximately 90% of internal casting stresses. This prevents the tool from warping over time, ensuring the square box maintains its perpendicularity and parallelism for years.
Yes, we offer full OEM/ODM support. We can manufacture custom dimensions beyond our standard range (100mm to 600mm) to meet your specific workpiece requirements.
All our square boxes are manufactured and verified according to GB/T 4986-2004 and ISO 8512-1 standards using CMM 3D laser scanning for validation.
We apply a specialized anti-corrosion coating involving pickling oil and plastic lining or anticorrosion paint, and then seal the unit in a reinforced plywood box for maximum protection.
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