Cast Iron Square Box

The cast iron square box, also known as a cast iron angle plate or box angle plate, is a precision measuring and setup tool used in machining, inspection, marking, and assembly tasks. Made from high-grade cast iron, it provides accurate right-angle surfaces for supporting and positioning workpieces during layout and inspection.

Key Features:

• Material:
  Made of high-strength cast iron HT200–HT300 with excellent wear resistance and dimensional stability.

• Precision Surfaces:
  The working surfaces (outside and inside) are machined or scraped to achieve high accuracy, typically according to DIN or GB standards (Grade 1, Grade 2, or as specified).

• Structure:
  Box-shaped hollow design with reinforced ribs, ensuring light weight while maintaining rigidity and resistance to deformation.

• Multiple Faces:
  Provides multiple 90° right-angle surfaces, allowing flexible use in horizontal, vertical, or square setups.

• Customization:
  Sizes, accuracy grades, and special features (such as threaded holes, slots, or lifting holes) can be customized on request.

Applications:

• Precision machining alignment and inspection

• Right-angle measurement and part squaring

• Setup of vertical and horizontal machining operations

• Support tool for marking and scribing operations

• Fixture base in assembly and welding tasks

Advantages:

• Ensures perpendicular alignment of components

• Stable structure minimizes measurement error

• Long service life with minimal maintenance

• Corrosion-resistant surface treatment (optional)

Maintenance:

• Store in a dry, dust-free environment

• Apply rust-preventive oil after use

• Avoid impacts or excessive loads on working surfaces

• Regularly calibrate for precision assurance

Conclusion:

The Cast Iron Square Box is an essential tool in any machining or inspection workshop, delivering reliable 90° referencing for precision engineering tasks. Its durability, accuracy, and versatility make it ideal for both production and quality control environments.