Precision Smooth Plug Gauges China Factory and Trusted Suppliers

High-precision smooth plug gauges from a leading China factory. Our professional suppliers provide H6-H12 accuracy tools for inner dimension measurement, featuring through-end and stop-end designs to ensure strict tolerance control for industrial workpieces.

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Details

Detailed Parameters

Compliance Standards	GB1957-81 / DIN7162	Accuracy Grades	H6, H7, H8, H9, H10, H12
Measurement Unit	Millimeters (mm)	Size Range	1.8mm to 200mm
Standard Sizes	1.8, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0...	Large Scale Options	62, 120, 135, 150, 165, 180, 200mm
Customization	Non-standard sizes available	Product Category	Smooth Gauge / Plug Gauge
Application	Cylindrical Hole Inspection	Material Quality	High-Precision Alloy Steel

Key Advantages

Extreme Durability

Crafted from premium hardened materials to resist wear and tear during frequent industrial usage.

Long-Term Stability

Maintains precise dimensions over extended periods, reducing the frequency of recalibration.

Global Standards

Fully compliant with GB and DIN specifications for international interchangeability.

Precise Grading

Available in H6 through H12 tolerances to match any technical drawing requirement.

Quick Inspection

Designed for rapid go/no-go testing, significantly increasing production line efficiency.

Bespoke Solutions

Professional customization for non-standard diameters and specialized checking instruments.

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Management Platforms

Inventory Control

Streamlined tracking of gauge sets and sizing to prevent production downtime.

Precision Calibration

Systematic maintenance schedules to ensure all plug gauges remain within tolerance.

Quality Alerts

Instant notifications when a part fails the plug gauge test for immediate correction.

Tolerance Monitoring

Digital logging of H6-H12 accuracy checks to maintain comprehensive QC records.

Asset Management

Centralized database for all measuring tools, including taper and thread gauges.

Process Optimization

Analyzing gauge wear patterns to optimize machining tool life and cycle times.

Investment Return Comparison

Metric	Standard Gauges	Our High-Precision Gauges
Wear Rate	High / Frequent Replacement	Ultra-Low / Extended Life
Tolerance Drift	Moderate	Minimal / Stable
Inspection Speed	Standard	Accelerated (Optimized Fit)
Reject Rate	Higher (due to tool wear)	Lowest (consistent accuracy)
ROI Period	Short-term Cost Saving	Long-term Value Maximization

Frequently Asked Questions

Q: What is the difference between H6 and H7 tolerance in smooth plug gauges?

H6 represents a tighter tolerance range than H7. The lower the number, the more precise the requirement, meaning H6 is used for high-precision fits while H7 is used for general precision applications.

Q: Do you provide customization for non-standard bore sizes?

Yes, we specialize in non-standard checks and measuring instruments. We can customize smooth plug gauges to your specific diameter and tolerance requirements.

Q: Which standards are your smooth gauges compliant with?

Our smooth plug gauges are manufactured in strict accordance with GB1957-81 and DIN7162 standards to ensure global compatibility.

Q: How should I maintain my plug gauges to prevent corrosion?

We recommend cleaning the gauge after use and applying a thin layer of anti-rust oil. Store them in a dry, temperature-controlled environment.

Q: Can you supply other types of gauges besides smooth plug gauges?

Yes, our full range includes Thread Gauges (Metric, American, English), Ring Gauges, Taper Gauges, Card Gauges, and various non-standard checking instruments.

Q: How do I know when a smooth plug gauge needs recalibration?

Recalibration is recommended based on usage frequency. If you notice visible wear or if the gauge starts to fit differently in a master ring gauge, it is time for professional calibration.

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