An official Distributor of Niigata Seiki in Vietnam
Steel square
Steel square is another tool used in the mechanical industry for quick, accurate, and efficient measurements.
Introduction
It is a product line manufactured by Niigata Seiki – Japan.
Application:
- Steel square is made from stainless steel and is designed for checking right angles and precise marking.
- It is applied in industries such as shipbuilding, steel construction, machining, and assembly.
- Additionally, it is also commonly used in woodworking, stonework, construction, and more.
Features:
- Available in various sizes and designs to suit different machining needs
- Low distortion and excellent wear resistance
- Clear and sharp markings for the most accurate measurement results
- High durability over time
- Can be used for precise distance measurement and marking
- Made from high-hardness steel with a smooth finish
Types of Steel square
Steel square (Type AA / DD)
First grade (Hardened):
- USE
● Measurement of squareness - MATERIAL
● Carbon steel for machine structual use(hardened measuring face)
● Hardness: over HV450 - FEATURES
● Dimension and accuracy equivalent to JIS B 752 (※exceeds JIS)
● Hardened measuring face for abrasion resistance
● All hardened, first grade squares are provided with inspection report
Second grade (Non-hardened):
- FEATURES
● Dimension and accuracy equivalent to JIS B 7526 (※exceeds JIS)
● Non-hardened・Ground finish
AA Type
DD Type
Steel square with metric graduated blade (Type C & Type E)
- USE
● Measurement of squareness - MATERIAL
● Carbon steel for machine structual use - FEATURES
● Graduated with 1mm division
● Accuracy equivalent to JIS Grade 2 - Graduation Accuracy: 0.4 (±mm)
C-150
E-150
Heavy duty steel square (HDD Type)
- USE
● Measurement of squareness - MATERIAL
● Carbon steel for machine structual use (hardened) - FEATURES
● The heavy duty ‘DD’ type is engineered for ultimate stability
● Provided with inspection report
HDD – 150
Steel square with flush mounted beam (TRS Series )
- USE
● Measurement of squareness - MATERIAL
● Carbon steel for machine structual use - FEATURES
● Available in “right handed” and “left handed” versions
● Accuracy equivalent to JIS Grade 2 - Grade 1 is also available on request
Blade steel square (AAI series)
- USE
● For precise right angle measurement - MATERIAL
● Carbon steel for machine structual us (hardened) - FEATURES
● Knife-shaped outer blade reflects light ray on object to be measured for clearance inspection - Squareness Accuracy:
+ AAI-100K: +/- 3.0 μm
+ AAI-150K: +/- 3.5 μm
AAI -150K
Cylindrical square ( CS-F Series)
- USE
● For precise right angle measurement - MATERIAL
● Alloy tool steel “hardened” - FEATURES
● Accuracy equivalent to JIS B 7539
● The highest squareness accuracy in the square products
● Non-conductive handle is less thermal expansion when in use
CS-F100
T- square (TS Series)
- USE
● For general engineering work or marking work - MATERIAL
● Carbon steel for machine structual use - FEATURES
● The blade and beam are permanently secured by rivets - Nominal Size: 100 ~ 1000 mm
- Weight: 130 g~10,9 kg
TS Series
Flange square (FS series )
- USE
● Inspection of surfaces with fange, and piping connections - MATERIAL
● Rolled steel for general structure - Nominal Size:
– 200 x 300: FS-1
– 300 x 400: FS-2
– 680 x 750: FS-3 - Straightness: +/- 0,037 mm ~0,071 mm
- Weight: 520g ~ 3,7 kg
- USE
FS Series

